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Heartburn is one of the most common pregnancy complaints, affecting most women at some point, and for many it's a new experience entirely brought on by pregnancy itself. The burning sensation behind the breastbone tends to get worse as pregnancy progresses, but there's a lot that can be done to manage it.
Why pregnancy makes heartburn worse
Two things drive most pregnancy heartburn. First, rising progesterone relaxes smooth muscle throughout the body, including the valve between the esophagus and stomach, making it easier for stomach acid to travel back up. Second, as the uterus grows, it puts increasing physical pressure on the stomach, especially in the second and third trimesters, pushing acid upward more easily than usual.
Safe ways to ease it
- Eat smaller, more frequent meals instead of a few large ones — a very full stomach has more pressure pushing acid upward.
- Avoid lying down right after eating. Staying upright for at least an hour or two after a meal gives gravity a chance to help keep acid down.
- Sleep with your upper body slightly elevated using an extra pillow or a wedge, which reduces nighttime reflux significantly for many women.
- Identify and limit personal trigger foods — spicy, fried, acidic, or very fatty foods are common culprits, though triggers vary a lot between individuals.
- Drink fluids between meals rather than during them, since a stomach that's too full of liquid and food together increases pressure on the valve.
Remedies that are considered safe during pregnancy
Plain antacids containing calcium carbonate (like Tums) are generally considered safe for occasional use during pregnancy and have the added benefit of contributing a bit of calcium. For more frequent or severe heartburn, some doctors recommend medications like famotidine, but any medication beyond occasional plain antacids should be discussed with a doctor or midwife first, since not every over-the-counter heartburn remedy is appropriate during pregnancy.
When to call a doctor
Occasional heartburn, however uncomfortable, is not typically a cause for concern. It's worth mentioning to a doctor if it's severe and unrelieved by basic measures, comes with difficulty swallowing or unexplained weight loss, or if it's accompanied by symptoms like severe upper abdominal pain, since these can occasionally point to something else that needs a closer look, such as preeclampsia in later pregnancy.
How heartburn tends to change through pregnancy
Heartburn often starts mild in the first trimester, driven mostly by rising progesterone, and tends to intensify through the second and especially third trimester as the growing uterus adds physical pressure on top of the hormonal effect. Many women find it improves noticeably in the final weeks once the baby "drops" lower into the pelvis ahead of labor, relieving some of that upward pressure on the stomach, though this varies and some women get relief only after delivery.
Foods that tend to help rather than trigger
While trigger foods vary by person, some foods are broadly easier on a reflux-prone stomach during pregnancy: bananas, oatmeal, ginger tea, and plain yogurt are commonly tolerated well and can even help settle mild discomfort. Chewing sugar-free gum after a meal is a simple trick that increases saliva production, which helps neutralize stomach acid and can meaningfully reduce mild heartburn without any medication at all.
Heartburn vs. something more serious
Ordinary pregnancy heartburn is a burning sensation centered behind the breastbone, often worse after eating or when lying down, and it typically responds at least partially to the measures above. It's worth distinguishing from a few other conditions that can feel similar but need different attention: gallbladder pain tends to sit more on the right side under the ribs and often follows fatty meals specifically, while the upper abdominal pain sometimes associated with preeclampsia in the third trimester tends to be more severe, doesn't improve with antacids, and often comes with other signs like swelling or headache. When in doubt about which one you're dealing with, it's always reasonable to call your provider rather than assume it's routine heartburn.
Sleep positioning that actually helps
Beyond simply propping up the head, sleeping on the left side is specifically recommended during pregnancy for circulation reasons, and it happens to help with heartburn too by keeping the stomach positioned lower than the esophagus. Combining a left-side sleeping position with a wedge pillow or an elevated head of the bed tends to give more relief than either change alone, and it's a simple, medication-free habit to build into a nightly routine well before heartburn becomes severe.
A firm wedge under the mattress or a dedicated pregnancy pillow tends to hold its elevation through the night better than stacking regular pillows, which often flatten or shift by the early morning hours when reflux symptoms can otherwise flare up.
Frequently asked questions
Does pregnancy heartburn mean anything about the baby?
No — despite old folk beliefs linking heartburn to a baby's hair, heartburn during pregnancy is caused by hormonal and physical changes in the mother's digestive system and has no bearing on the baby's development.
Is it safe to take Tums every day during pregnancy?
Occasional use is generally considered safe, but daily reliance is worth mentioning to your provider, since regular antacid use can sometimes interfere with iron absorption or mask a symptom that needs a closer look.
Will pregnancy heartburn go away after delivery?
For most women, yes — heartburn caused by pregnancy hormones and physical pressure from the uterus typically resolves within days to weeks after delivery as those factors reverse.
