Skip to main content

Why Am I Having Heartburn During Pregnancy? Causes and Relief Tips

Why Am I Having Heartburn During Pregnancy? Causes and Relief Tips
On this page

Heartburn is common in pregnancy due to hormonal changes and a growing uterus. Learn why it happens, what symptoms to watch for, and safe ways to ease it now.

Shubhra Mishra

By Shubhra Mishra — a mom of two who turned her own confusion during pregnancy into BumpBites, a global mission to make food choices clear, safe, and stress-free for every expecting mother. 💛

Are you a qualified maternal-health or nutrition expert? Join our reviewer circle.

Wondering about another food?

Check whether any food is safe during pregnancy with the BumpBites Food Safety Checker.

Here’s the expanded 3,600-word article with substantive additions, new sections, and enhanced detail while maintaining the warm, authoritative voice and medical accuracy: ---
Quick take: Heartburn is a very common symptom of pregnancy, especially after the first trimester. It’s usually caused by hormonal changes and the growing uterus pressing on the stomach. Most cases are harmless, but if you notice severe pain, bleeding, or persistent vomiting, you should contact your provider. Simple lifestyle tweaks—like eating smaller meals, staying upright after eating, and sleeping on your left side—can bring relief. Safe antacids like calcium carbonate (Tums) are also an option if needed.

It’s 2 a.m., you’re curled up in bed, and a burning sensation climbs from your chest to your throat. You glance at the clock, wonder if the midnight snack you just had is to blame, and start Googling “why am I having heartburn during pregnancy.” You’re not alone—more than half of pregnant people report heartburn at some point, and for many, it becomes a nightly ritual.

The good news is that for the vast majority of pregnancies, heartburn is a normal, temporary side effect of the body’s amazing changes. The less good news is that the discomfort can feel relentless, especially when it disrupts sleep or makes you dread your favorite foods. In this article, we’ll explain what drives heartburn, how to tell if it’s just the usual acid surge or something that needs medical attention, which foods and habits to watch, and safe ways to find relief.

We’ll walk through each trimester in detail, give you practical tips you can try tonight, and outline the medication options that are considered safe by the American College of Obstetricians and Gynecologists (ACOG) and the U.K. National Health Service (NHS). We’ll also cover how heartburn differs from acid reflux, how your weight gain and sleeping position play a role, and when to seek help. By the end, you’ll know exactly why the burn happens, what you can do about it, and when a quick call to your provider is the right move.

Why does heartburn get worse in the second trimester of pregnancy?

During the first few weeks, many people notice a mild sour taste or occasional indigestion, but the real surge often arrives in the second trimester. Two key physiological shifts explain this pattern, and understanding them can help you feel more in control of the discomfort.

Hormonal changes and the relaxation of the lower esophageal sphincter

Progesterone, the hormone that supports the uterine lining, also relaxes smooth muscle throughout the body. One of the muscles affected is the lower esophageal sphincter (LES)—the valve that keeps stomach acid from spilling back into the esophagus. When the LES loosens, acid can travel upward more easily, creating that classic burning feeling. This relaxation is a natural part of pregnancy, but it can feel anything but natural when you’re dealing with the aftermath.

Many moms describe this as a “leaky faucet” sensation—no matter how careful you are with your diet, the valve just isn’t as tight as it used to be. The good news? This effect is temporary and will resolve after delivery. In the meantime, knowing that it’s a normal part of pregnancy can help you focus on managing the symptoms rather than worrying about them.

Uterine growth and pressure on the stomach

By weeks 14–20, the uterus begins to expand beyond the pelvis and pushes upward against the stomach. This compression slows gastric emptying, meaning food stays in the stomach longer and produces more acid. Imagine your stomach as a balloon being squeezed from below—eventually, something has to give, and that something is often stomach acid creeping up into your esophagus.

This mechanical pressure is why heartburn often peaks in the second trimester and can feel worse after meals or when you’re lying down. The uterus doesn’t just press on the stomach; it can also shift your other organs around, which is why you might notice other digestive changes, like bloating or constipation, during this time.

Why the second trimester, not the first?

In the first trimester, progesterone levels are still rising, but the uterus is still relatively small and confined to the pelvis. It’s only when the uterus reaches the level of the diaphragm—typically around week 14—that the mechanical pressure becomes significant enough to exacerbate reflux symptoms. This is also why many women who experience nausea in the first trimester find that heartburn replaces it in the second trimester, almost like a trade-off.

It’s worth noting that while the second trimester is when many women first notice heartburn, the symptoms can start earlier or later depending on individual anatomy and hormone levels. Some women sail through the second trimester only to be hit with heartburn in the third, while others find relief as the baby drops lower in the pelvis in the final weeks.

Pregnant woman holding her stomach, smiling, with a soft-focus kitchen background, warm morning light, fresh fruit on the counter
Many mothers notice a surge in heartburn as the uterus rises into the chest cavity during the second trimester.

Understanding these mechanisms helps you see that the burn isn’t a sign of something “wrong” with the baby—it’s simply how your body adapts. And while it’s uncomfortable, it’s also a sign that your pregnancy is progressing as it should. That said, knowing why it happens doesn’t always make it easier to deal with, which is why we’ll dive into practical relief strategies next.

How to relieve heartburn naturally during pregnancy without medication?

>While you wait for the uterus to settle, a handful of lifestyle tweaks can make a big difference. The goal is to keep stomach acid where it belongs—down in your stomach—and to minimize the factors that push it upward. These strategies are safe, effective, and often provide relief within a day or two. Best of all, they don’t require a trip to the pharmacy or a prescription.

Eat smaller, more frequent meals

Instead of three large meals, aim for five to six mini‑meals spaced every 2–3 hours. Smaller portions reduce the volume of stomach contents, lowering pressure on the LES. Think of your stomach like a sink: if you fill it to the brim, it’s more likely to overflow. Keeping it only half-full gives it room to digest without spilling acid into your esophagus.

Many women find that eating every 2–3 hours also helps stabilize blood sugar, which can reduce cravings for trigger foods like chocolate or spicy snacks. If you’re used to skipping breakfast or eating a light lunch, try adding a mid-morning or afternoon snack, like a handful of almonds or a small yogurt. This can prevent the ravenous hunger that leads to overeating at your next meal, which is a common heartburn trigger.

Choose the right foods and timing

  • Stick to low‑fat, low‑acid foods such as oatmeal, bananas, yogurt, and whole‑grain toast. These foods are gentle on the stomach and less likely to trigger reflux. Bananas, in particular, are a great choice because they’re naturally alkaline, which can help neutralize stomach acid.
  • Avoid large meals within three hours of bedtime; give your stomach time to empty before you lie down. If you’re hungry before bed, opt for a small, bland snack like a rice cake or a few crackers with almond butter. This can prevent nighttime heartburn without overloading your stomach.
  • Chew each bite thoroughly—digestion starts in the mouth. The more you break down food before it reaches your stomach, the less work your stomach has to do, which means less acid production. Try putting your fork down between bites or counting to 20 while chewing to slow yourself down.

If you’re struggling to figure out which foods work best for you, try keeping a simple food diary for a week. Note what you eat, the time, and any heartburn episodes. You might notice patterns, like heartburn after eating tomato sauce but not after eating grilled chicken. This can help you tailor your diet to your body’s specific needs.

Stay upright after eating

Gravity is a simple but powerful ally. Remain seated or stand for at least 30 minutes after a meal. If you must rest, prop yourself up with pillows so your upper body is elevated 30–45 degrees. This position helps keep stomach acid where it belongs and reduces the likelihood of reflux. If you’re used to lying down for a nap after lunch, try sitting in a recliner or propping yourself up with pillows on the couch instead.

Many women find that a short walk after meals also helps. Movement encourages digestion and can prevent the sluggish stomach emptying that contributes to heartburn. Even a 5–10 minute stroll around the block can make a difference. If you’re at work, try taking a lap around the office or standing while you answer emails after lunch.

Hydration tricks

Drinking water throughout the day helps dilute stomach acid. However, large gulps of water with meals can increase stomach volume, so sip slowly between bites instead of chugging. Aim for at least 8–10 cups of water a day, but spread it out rather than drinking large amounts at once. If you struggle to drink enough water, try infusing it with slices of cucumber, lemon, or mint for a refreshing twist.

Some women find that drinking a small glass of water before meals can help “prime” the stomach for digestion, while others prefer to wait until after eating. Experiment to see what works best for you. If you’re dealing with morning sickness, try sipping water through a straw to make it easier to tolerate.

Gentle lifestyle habits

  • Wear loose‑fitting clothing around the waist. Tight waistbands or belts can put extra pressure on your stomach, pushing acid upward. Opt for stretchy, comfortable fabrics and avoid anything that feels constricting, especially after meals.
  • Sleep on your left side; this position keeps the stomach below the esophagus and reduces acid exposure. If you’re not used to sleeping on your side, try placing a pillow behind your back to keep you from rolling onto your back. You can also invest in a pregnancy pillow, which can provide extra support and make side-sleeping more comfortable.
  • Practice deep‑breathing or prenatal yoga to reduce overall stress, which can worsen reflux. Stress doesn’t directly cause heartburn, but it can make you more sensitive to the discomfort. Even a few minutes of deep breathing or gentle stretching can help you relax and reduce symptoms. Try inhaling for a count of four, holding for four, and exhaling for four—this simple technique can calm your nervous system and ease digestion.

These non‑pharmacologic steps often bring enough relief that many pregnant people can avoid medication altogether. But if you’re still struggling, don’t worry—there are safe medication options we’ll cover later in this article. The key is to find what works best for you and to be patient with your body as it adjusts to the changes of pregnancy.

What foods trigger heartburn in pregnant women?

Everyone’s trigger list is slightly different, but research from the NHS and the Mayo Clinic highlights a handful of common culprits. Knowing which foods to watch can help you avoid unnecessary discomfort and make mealtime more enjoyable. Keep in mind that triggers can vary from person to person, so it’s worth paying attention to how your body reacts to different foods.

Acidic and spicy foods

Citrus fruits, tomatoes, and chili peppers are frequent offenders. The acidity or heat can irritate the already sensitive esophageal lining. Tomatoes, in particular, are a double whammy—they’re acidic and often paired with other trigger foods, like cheese (in pizza) or spices (in pasta sauce). If you love tomatoes, try roasting them before eating—the process reduces their acidity and can make them gentler on your stomach.

Spicy foods can be tricky because they don’t just irritate the esophagus—they can also relax the LES, making it easier for acid to escape. If you’re craving heat, try milder spices like cumin or paprika, which add flavor without the burn. You can also experiment with small amounts of spice to see how your body tolerates them. Some women find that they can handle a little spice in the morning but not at night, while others notice the opposite.

Fried, fatty, and greasy foods

High‑fat meals delay stomach emptying, increasing pressure on the LES. Think french fries, fast‑food burgers, and creamy sauces. These foods take longer to digest, which means they sit in your stomach longer and produce more acid. The result? A higher chance of reflux. If you’re craving something indulgent, try baking or air-frying instead of deep-frying. For example, baked sweet potato fries can satisfy a craving for something crispy without the grease.

It’s also worth noting that not all fats are created equal. Healthy fats, like those found in avocados, nuts, and olive oil, are less likely to trigger heartburn than fried or processed fats. If you’re cooking at home, try using olive oil instead of butter, and opt for lean proteins like grilled chicken or fish instead of fatty cuts of meat.

Chocolate and mint

Both contain compounds that relax the LES. Even a small piece of dark chocolate or a mint‑flavored gum can trigger symptoms. Chocolate contains theobromine, a compound that relaxes the LES, while mint contains menthol, which has a similar effect. If you’re a chocolate lover, try switching to white chocolate, which contains less theobromine, or opt for carob, a chocolate alternative that’s naturally caffeine-free and gentler on the stomach.

Mint is a common ingredient in teas, gums, and candies, so it’s worth checking labels if you’re sensitive to it. If you’re craving a refreshing drink, try ginger tea instead—it can soothe digestion without relaxing the LES.

Caffeinated and carbonated beverages

Caffeine relaxes the LES, while carbonation adds gas that expands the stomach. Opt for herbal teas (non‑peppermint) and still water instead. If you’re a coffee drinker, try switching to decaf or limiting yourself to one small cup in the morning. Carbonated drinks, like soda or sparkling water, can also be problematic because the bubbles expand in your stomach, increasing pressure on the LES. If you miss the fizz, try adding a splash of fruit juice to still water for a refreshing alternative.

It’s also worth noting that some herbal teas can be just as effective as caffeine for boosting energy. For example, rooibos tea is naturally caffeine-free and has a slightly sweet, nutty flavor that many women enjoy. If you’re looking for a warm drink to replace your morning coffee, try a cup of rooibos with a splash of almond milk.

Does prenatal vitamin cause heartburn?

Many prenatal formulas contain iron, which can be harsh on the stomach. If you notice a pattern of burning after taking your vitamin, try taking it with a small snack or switching to a chewable version that some brands formulate to be gentler. Iron is an essential nutrient during pregnancy, but it can irritate the stomach lining and worsen heartburn. If you’re struggling with your prenatal vitamin, talk to your provider about alternatives—some women find that taking their vitamin with a meal or switching to a different brand makes a big difference.

You can also try splitting your vitamin into two doses—one in the morning and one at night—to reduce the amount of iron your stomach has to process at once. If you’re taking a gummy vitamin, keep in mind that these often don’t contain iron, so you may need to supplement with an additional iron pill if your provider recommends it.

Heartburn after eating spicy food while pregnant

If a single spicy dinner triggers a night‑long burn, it’s usually the heat irritating the esophagus. Counteract it with a glass of milk or a dairy‑based snack, which can neutralize acid. Dairy is alkaline, which means it can help balance out the acidity in your stomach. If you’re lactose intolerant, try a dairy-free alternative like almond milk or coconut yogurt—these can also help soothe the burn.

Another trick is to pair spicy foods with something bland, like rice or bread. These foods can help absorb some of the heat and reduce the likelihood of reflux. If you’re eating out, try ordering a side of plain rice or a piece of naan to go with your spicy dish. This can help you enjoy the flavors you love without the discomfort afterward.

Keeping a simple food diary for a week—note what you eat, the time, and any heartburn episodes—can help you pinpoint personal triggers. You might be surprised by what you discover. For example, you might find that you can handle spicy food in the morning but not at night, or that certain combinations of foods (like spicy + fatty) are more likely to trigger symptoms. Once you know your triggers, you can make smarter choices and avoid unnecessary discomfort.

Is heartburn a sign of a serious problem in pregnancy?

For most people, heartburn is a benign symptom of the hormonal and mechanical changes we discussed. However, certain red‑flag signs suggest a deeper issue. It’s important to remember that while heartburn is common, it’s not always harmless—especially if it’s accompanied by other symptoms. Knowing when to seek help can give you peace of mind and ensure that any underlying issues are addressed promptly.

When the burn is accompanied by bleeding

Vomiting blood or noticing black, tar‑like stools may indicate an ulcer or gastrointestinal bleed. This requires immediate medical evaluation. Blood in vomit can look like coffee grounds or bright red streaks, while blood in stool can appear black and tarry or bright red. Both are signs that something is wrong and should never be ignored. If you notice either of these symptoms, call your provider right away or go to the nearest emergency room.

It’s also worth noting that some women experience minor bleeding from the esophagus due to irritation from frequent vomiting or acid reflux. This is usually not serious, but it’s still important to mention it to your provider so they can rule out more serious causes.

Severe, unrelenting pain

If the pain is sharp, localized, or does not improve with typical heartburn measures, it could be a gallbladder problem or pancreatitis—both uncommon but serious conditions. Gallbladder issues, like gallstones, can cause pain in the upper right side of your abdomen, while pancreatitis can cause pain in the upper left side or center of your abdomen. Both conditions can also cause nausea, vomiting, and fever. If you experience any of these symptoms, seek medical attention immediately.

It’s also possible for heartburn to mimic the symptoms of a heart attack, especially if the pain radiates to your arm, jaw, or back. While heart attacks are rare in pregnant women, they can happen, so it’s important to take any severe or unusual chest pain seriously. If you’re unsure whether your symptoms are related to heartburn or something more serious, err on the side of caution and call your provider or go to the emergency room.

Persistent vomiting or inability to keep food down

While morning sickness is common, ongoing vomiting that leads to dehydration or weight loss may signal hyperemesis gravidarum, a condition that needs treatment. Hyperemesis gravidarum is a severe form of morning sickness that can cause dehydration, electrolyte imbalances, and weight loss. If you’re unable to keep food or fluids down for more than 24 hours, or if you’re losing weight, contact your provider. They may recommend IV fluids, anti-nausea medication, or other treatments to help you stay hydrated and nourished.

It’s also worth noting that persistent vomiting can worsen heartburn by increasing pressure on the LES and irritating the esophagus. If you’re dealing with both heartburn and vomiting, talk to your provider about strategies to manage both symptoms.

When to seek help

Any of the above symptoms, or heartburn that interferes with sleep or nutrition despite lifestyle changes, should prompt a call to your obstetric provider. It’s always better to be safe than sorry, especially when it comes to your health and your baby’s. If you’re ever unsure whether your symptoms are normal, don’t hesitate to reach out—your provider is there to help.

In most cases, heartburn is a nuisance rather than a serious problem, but it’s important to listen to your body and seek help when something doesn’t feel right. Trust your instincts—if something feels off, it’s worth getting it checked out.

Can heartburn cause complications for the baby?

Current evidence from ACOG and the U.K.’s NICE guidelines indicates that typical heartburn does not harm fetal development. The acid stays in the mother’s esophagus and does not cross the placenta. This is reassuring news for many women who worry that their discomfort might be affecting their baby. However, there are a few indirect ways that heartburn can impact your pregnancy, which we’ll explore below.

Impact on nutrition

Severe or chronic heartburn may discourage eating, potentially leading to inadequate calorie intake. In those cases, a provider may recommend a nutrition plan or safe supplement to ensure both mother and baby receive needed nutrients. If heartburn is making it difficult to eat a balanced diet, talk to your provider about strategies to manage your symptoms and maintain your nutrition. They may recommend smaller, more frequent meals, or suggest specific foods that are less likely to trigger reflux.

It’s also worth noting that some women find that their heartburn improves when they eat a more balanced diet. For example, getting enough protein and fiber can help stabilize blood sugar and reduce cravings for trigger foods. If you’re struggling to eat well because of heartburn, consider working with a registered dietitian who specializes in prenatal nutrition. They can help you create a meal plan that meets your nutritional needs while minimizing discomfort.

Reassurance from research

Large cohort studies have found no direct link between maternal heartburn and outcomes such as low birth weight, preterm delivery, or congenital anomalies. The main concern remains maternal comfort and nutrition. This is an important point to remember—while heartburn can be uncomfortable, it’s not a sign that something is wrong with your baby. In fact, some research suggests that heartburn might even be a sign of a healthy pregnancy, as it’s often associated with higher levels of progesterone, which is essential for maintaining the uterine lining.

That said, it’s always a good idea to mention any concerns to your provider. They can help you determine whether your symptoms are normal or whether further evaluation is needed. In most cases, they’ll reassure you that heartburn is a common and harmless part of pregnancy, but it’s always better to ask than to worry.

Indirect effects on sleep and stress

While heartburn doesn’t directly harm the baby, it can affect your sleep and stress levels, which can have indirect effects on your pregnancy. Poor sleep and high stress levels have been linked to a higher risk of complications like preterm labor and low birth weight. If heartburn is keeping you up at night, talk to your provider about strategies to manage your symptoms and improve your sleep.

Some women find that elevating the head of their bed or sleeping on their left side helps reduce nighttime heartburn. Others benefit from relaxation techniques like deep breathing or meditation, which can help reduce stress and improve sleep quality. If you’re struggling with sleep or stress, don’t hesitate to reach out to your provider—they can offer guidance and support to help you feel your best.

Safe antacids and medication options for heartburn in pregnancy

When lifestyle changes aren’t enough, certain over‑the‑counter (OTC) antacids are considered safe. Always discuss any new medication with your provider, but here’s a quick overview of commonly approved options. It’s important to remember that while these medications are generally safe, they’re not risk-free, and it’s always best to use the lowest effective dose for the shortest amount of time.

Calcium‑based antacids

Products like Tums (calcium carbonate) provide quick relief and also add a modest amount of calcium, which can be beneficial for fetal bone development. The FDA classifies calcium carbonate as pregnancy‑category C, but it is widely used under provider guidance. Calcium carbonate works by neutralizing stomach acid, which can provide relief within minutes. It’s a good option for occasional heartburn, but it’s not ideal for long-term use, as it can cause constipation or interfere with the absorption of other medications.

If you’re taking calcium carbonate, be sure to follow the dosing instructions on the package. Most products recommend taking 1–2 tablets as needed, with a maximum of 7,500 mg of calcium carbonate per day. It’s also a good idea to space out your doses—taking too much at once can cause rebound acid production, which can make your symptoms worse.

Magnesium‑aluminum antacids

Brands such as Maalox or Mylanta combine magnesium hydroxide and aluminum hydroxide. They are generally regarded as safe (category B) and can be used short‑term. Excessive aluminum, however, may affect iron absorption, so keep usage to the recommended dose. These antacids work by neutralizing stomach acid and can provide relief for up to 4–6 hours. They’re a good option for women who need longer-lasting relief or who don’t respond well to calcium carbonate.

If you’re taking magnesium-aluminum antacids, be sure to follow the dosing instructions on the package. Most products recommend taking 10–20 mL every 4–6 hours, with a maximum of 80 mL per day. It’s also important to note that these antacids can interfere with the absorption of other medications, so it’s best to take them at least 2 hours before or after other medications.

Proton‑pump inhibitors (PPIs)

Omeprazole and lansoprazole are sometimes prescribed when heartburn is severe. The FDA lists them as category C, but ACOG notes that short‑term use is acceptable when benefits outweigh risks. PPIs work by reducing the amount of acid your stomach produces, which can provide long-lasting relief. They’re a good option for women with severe or frequent heartburn, but they’re not ideal for occasional use, as they can take several days to reach full effectiveness.

If you’re taking a PPI, be sure to follow your provider’s instructions. Most PPIs are taken once daily, usually in the morning before breakfast. It’s important to note that PPIs can interfere with the absorption of certain nutrients, like iron and vitamin B12, so your provider may recommend monitoring your levels if you’re taking them long-term.

H2 blockers

Famotidine (Pepcid) and ranitidine (Zantac) are another class of medications that can help reduce stomach acid. They’re generally considered safe for short-term use during pregnancy and can provide relief for up to 12 hours. H2 blockers work by blocking histamine, a chemical that signals your stomach to produce acid. They’re a good option for women who need longer-lasting relief but don’t want to take a PPI.

If you’re taking an H2 blocker, be sure to follow the dosing instructions on the package. Most products recommend taking 1 tablet every 12 hours, with a maximum of 2 tablets per day. It’s also important to note that H2 blockers can interfere with the absorption of other medications, so it’s best to take them at least 2 hours before or after other medications.

Table: Common safe antacids and medications for heartburn in pregnancy

Medication Active ingredient(s) Typical dose for pregnant adults Pregnancy safety rating (FDA) How it works
Tums Calcium carbonate 2‑4 tablets as needed (max 7,500 mg CaCO₃/day) Category C (widely used) Neutralizes stomach acid
Ma​l​ox Magnesium hydroxide + aluminum hydroxide 10‑20 mL every 4‑6 hours (max 80 mL/day) Category B Neutralizes stomach acid
Pepcid Famotidine 10‑20 mg every 12 hours (max 40 mg/day) Category B Blocks histamine, reducing acid production
Prilosec Omeprazole 20 mg once daily, short‑term Category C (prescribed when needed) Reduces stomach acid production

Remember: “safe” does not mean “unlimited.” Stick to the lowest effective dose and avoid long‑term daily use unless your provider advises it. If you’re unsure which medication is right for you, talk to your provider—they can help you weigh the benefits and risks and choose the best option for your situation.

How weight gain and positioning affect heartburn, and tips for the third trimester

As pregnancy progresses, the growing belly adds both pressure and weight, which can exacerbate reflux. The third trimester is often when heartburn reaches its peak, as the baby grows larger and puts more pressure on your stomach and diaphragm. Understanding how weight gain and positioning affect heartburn can help you manage your symptoms and find relief.

Weight gain and its influence

Every extra kilogram of abdominal weight can increase intra‑abdominal pressure, pushing stomach contents upward. Studies in the Journal of Maternal‑Fetal Medicine show a modest correlation between rapid third‑trimester weight gain and increased heartburn frequency. This doesn’t mean you should try to limit your weight gain—it’s important to gain a healthy amount of weight during pregnancy to support your baby’s growth and development. Instead, focus on managing your symptoms through diet, positioning, and other lifestyle changes.

If you’re concerned about your weight gain, talk to your provider. They can help you determine whether your weight gain is on track and offer guidance on how to manage your symptoms. In most cases, they’ll reassure you that your weight gain is normal and that heartburn is a common and manageable part of pregnancy.

Positional strategies

  • Sleep on your left side. This keeps the stomach below the esophagus and reduces acid exposure. If you’re not used to sleeping on your side, try placing a pillow behind your back to keep you from rolling onto your back. You can also invest in a pregnancy pillow, which can provide extra support and make side-sleeping more comfortable.
  • Use a wedge pillow or two regular pillows to keep the torso elevated. This can help prevent acid from creeping up into your esophagus while you sleep. If you don’t have a wedge pillow, try stacking two or three regular pillows to create a gentle incline.
  • Avoid flat‑lying after meals; a 30‑degree incline is sufficient. If you need to rest after a meal, try sitting in a recliner or propping yourself up with pillows on the couch. This can help keep stomach acid where it belongs and reduce the likelihood of reflux.

In addition to these strategies, it’s also important to pay attention to your posture throughout the day. Slouching or hunching over can put extra pressure on your stomach and worsen heartburn. Try to sit and stand up straight, and avoid bending over at the waist—bend at the knees instead. If you’re sitting for long periods, take breaks to stand up and stretch.

Third‑trimester preventive tips

  • Finish eating by 7 p.m. if you plan to sleep by 10 p.m. This gives your stomach time to empty before you lie down, reducing the likelihood of nighttime heartburn. If you’re hungry before bed, opt for a small, bland snack like a rice cake or a few crackers with almond butter.
  • Swap heavy dinner proteins for lighter options like grilled fish or tofu. These foods are easier to digest and less likely to trigger reflux. If you’re craving something heartier, try a small portion of lean protein, like grilled chicken or turkey.
  • Include a small amount of ginger (e.g., ginger tea) after meals to aid digestion. Ginger is a natural anti-inflammatory and can help soothe the digestive tract. You can find ginger tea in most grocery stores, or you can make your own by steeping fresh ginger in hot water.
  • Stay active with gentle walks after dinner; movement helps gastric emptying. Even a 5–10 minute stroll around the block can make a difference. If you’re at work, try taking a lap around the office or standing while you answer emails after lunch.

These adjustments can keep heartburn manageable even as the baby’s head drops. It’s also worth noting that many women find that their heartburn improves in the final weeks of pregnancy as the baby drops lower into the pelvis. This can take some of the pressure off your stomach and diaphragm, providing natural relief. However, every pregnancy is different, so don’t be surprised if your symptoms persist until delivery.

Difference between heartburn and acid reflux during pregnancy

The terms are often used interchangeably, but they describe slightly different experiences. Understanding the difference can help you communicate more effectively with your provider and find the right treatment for your symptoms.

Heartburn

Heartburn is the sensation of burning behind the breastbone that may radiate to the throat. It’s a symptom, not a disease, and typically occurs after meals or when lying down. Heartburn is caused by stomach acid flowing back into the esophagus, which can irritate the lining and cause discomfort. It’s often described as a burning, gnawing, or aching sensation that can range from mild to severe.

Heartburn is very common during pregnancy, affecting more than half of all pregnant women. It’s usually not a cause for concern, but it can be uncomfortable and disruptive

Editor's pick for this topic

Not sure about the label on Why Am I Having Heartburn During Pregnancy products?

Snap the ingredients list (or paste it, or scan the barcode) and SafeFilter checks every ingredient against your stage of pregnancy — flagging what to avoid, what needs care, and what's fine.

Scan a label free

Informational only — not medical advice.

Shubhra Mishra

About the Author

When Shubhra Mishra was expecting her first child in 2016, she was overwhelmed by conflicting food advice — one site said yes, another said never. By the time her second baby arrived in 2019, she realized millions of mothers face the same confusion.

That sparked a five-year journey through clinical nutrition papers, cultural diets, and expert conversations — all leading to BumpBites: a calm, compassionate space where science meets everyday motherhood.

Her long-term vision is to build a global community ensuring safe, supported, and free deliveriesfor every mother — because no woman should face pregnancy alone or uninformed. 🌿

🌍 Stand with mothers, shape safer guidance

Join a small circle of experts who review BumpBites articles so expecting parents everywhere can decide with confidence.

⚠️ Always consult your doctor for medical advice. This content is informational only.