Indigestion during pregnancy is extremely common, and the good news is that most cases respond well to simple changes in how and what you eat. Hormonal shifts and your growing uterus work together to slow digestion and push stomach acid upward, which means indigestion tends to worsen as pregnancy progresses. But a combination of dietary adjustments, body positioning, and safe medications can bring real relief.
Why Pregnancy Causes Indigestion
Progesterone, which rises steadily throughout pregnancy, relaxes the circular band of muscle at the top of your stomach that normally keeps acid from flowing backward into your esophagus. At the same time, progesterone slows your entire digestive process, so food sits in your stomach longer than usual. As your uterus grows, it pushes upward on your stomach, compressing it and making reflux even more likely. This is why many women notice indigestion worsening in the second and third trimesters, even if the first trimester was fine.
Foods and Drinks to Avoid
Certain foods relax that already-weakened muscle or increase acid production, making symptoms noticeably worse. The most common triggers include:
- Spicy, greasy, or fatty foods
- Citrus fruits and juices
- Chocolate
- Large meals or overeating
- Eating right before bedtime
Drinking fluids with a meal also increases the total volume in your stomach, which raises the odds of reflux. Try sipping water between meals instead of during them. You don’t need to eliminate every trigger food permanently. Pay attention to which ones consistently cause problems for you and cut back on those specifically.
How to Change Your Eating Habits
Switching from three large meals to five or six smaller ones throughout the day is one of the most effective changes you can make. Smaller meals mean less volume in your stomach at any given time, which reduces upward pressure on that weakened sphincter. Eat slowly and chew thoroughly. Rushing through meals means you swallow more air and send larger, harder-to-digest pieces of food into a system that’s already working at a slower pace.
Finish your last meal or snack at least two to three hours before lying down. This gives your stomach time to empty before gravity stops helping keep acid where it belongs.
Sleep Position and Posture
Nighttime indigestion is particularly miserable because lying flat lets stomach acid flow freely into the esophagus. Elevating your upper body with a wedge pillow (not just stacking regular pillows, which tends to bend you at the waist) keeps gravity working in your favor.
Research from Harvard Health found that sleeping on your left side clears acid from the esophagus significantly faster than sleeping on your back or right side. Since left-side sleeping is already the recommended position in later pregnancy for blood flow, this is an easy change. If you wake up with heartburn, try sitting upright for a few minutes before lying back down on your left side.
Ginger for Nausea and Indigestion
Ginger is one of the most studied natural remedies for pregnancy-related stomach issues. The generally accepted safe limit is up to 1 gram (1,000 mg) of ginger per day during pregnancy. That translates to roughly four cups of ginger tea, or one teaspoon of fresh sliced or ground ginger root steeped in hot water.
Start with a small amount and see how you respond. Ironically, too much ginger can cause the same symptoms you’re trying to fix, including heartburn and burping. If you notice that happening, scale back. Women with a history of vaginal bleeding, miscarriage, or bleeding disorders should avoid ginger products entirely.
Which Antacids Are Safe During Pregnancy
Over-the-counter antacids containing calcium or magnesium are the preferred first-line options during pregnancy. Calcium carbonate (the active ingredient in Tums) is the most widely recommended. These work by directly neutralizing stomach acid and typically bring relief within minutes.
A few important distinctions: aluminum-containing antacids are generally considered safe at normal doses, but high doses may raise aluminum levels enough to pose a risk. Experts tend to favor calcium or magnesium formulations instead. One ingredient to actively avoid is magnesium trisilicate, found in some Gaviscon products, which at high doses over long periods has been linked to kidney and respiratory problems in the fetus. Always check the active ingredients on the label rather than relying on the brand name alone.
When Stronger Medications Are Needed
If antacids aren’t cutting it, acid-reducing medications are the next step. H2 blockers (like famotidine) reduce the amount of acid your stomach produces and have a long track record of use during pregnancy. Proton pump inhibitors, the stronger class of acid reducers, have also been studied in pregnant women. A multicenter controlled study of over 100 pregnancies found no increased risk of birth defects, and no differences in birth weight, gestational age, or complications compared to women who took no medications. Exposure during the critical period of organ formation in the first trimester showed no elevated risk.
That said, these medications work best as a second option after lifestyle changes and antacids have been tried. Your provider can help you decide which type makes sense based on how severe your symptoms are and how far along you are.
When Indigestion Might Be Something Else
Most pregnancy indigestion is harmless, but upper abdominal pain can occasionally signal something more serious. Pain under your ribs on the right side, sometimes called epigastric pain, can be confused with heartburn or indigestion but is also a warning sign of preeclampsia or a related liver condition called HELLP syndrome. This is especially worth paying attention to if the pain is accompanied by severe headaches, vision changes, sudden swelling in your face or hands, or shoulder pain that feels like deep pinching along the bra strap or neck area.
The key difference: typical indigestion is a burning sensation that gets better with antacids and worsens after eating trigger foods. Preeclampsia-related pain tends to be a persistent, pressure-like pain in the upper right abdomen that doesn’t respond to antacids and may come with other symptoms. If you’re unsure, or if the pain is new, intense, or feels different from your usual heartburn, get it evaluated promptly.