Heartburn in pregnancy is caused by a muscular weakness. The muscle involved is the lower esophageal sphincter (LES), a ring of muscle between your stomach and esophagus. The LES is designed to relax when you swallow food so that the food can enter the stomach. Once the food is in the stomach, the LES is to tighten, keeping food and stomach acids from flowing back into your esophagus. If the LES always worked properly, no one would ever suffer heartburn in pregnancy.



Like many other parts of the body, however, the LES is affected by pregnancy. Heartburn in pregnancy is a frequent complaint.

Common Question about Heartburn in Pregnancy

When does heartburn start in pregnancy? How soon in pregnancy do you get heartburn? When should I expect heartburn in pregnancy? The question varies, but the answer is always the same. Heartburn in pregnancy usually begins around the fifth month. From that point forward, it may come and go until you give birth.

How do you treat heartburn in pregnancy?

Pregnancy Heartburn Treatment

Pregnancy heartburn treatment begins with an understanding of the relationship between heartburn and pregnancy. Why is it that at this time when you are so happy to be expecting, you suddenly have heartburn?

With pregnancy, the placenta produces progesterone, a hormone that relaxes the uterus' smooth muscles. It relaxes some other muscles, too, one of which can be the LES separating the esophagus and stomach. As progesterone relaxes the LES, it fails to close and/or remain tightly closed. This allows acids to flow back into the esophagus, causing heartburn. Progesterone also affects the contractions of the esophagus, slowing the wavelike action. This, too, contributes to heartburn in pregnancy.

As your pregnancy progresses and your baby grows, your abdominal cavity will become crowded. The limited space will be taken up increasingly by the growing, moving infant. This puts pressure on the stomach, which in turn pressures the LES to open. Heartburn can quickly result as stomach acids are pushed into the esophagus.

Steps of Pregnancy Heartburn Treatment

Your healthcare provider will warn you not to take medications that might harm the baby. There are steps you can take, however, to treat heartburn in pregnancy.

1. Watch your weight gain. Ask your physician how much you should reasonably gain, and be careful to keep your weight to that limit. Excess weight will place more pressure on the LES and increase heartburn.

2. Avoid tight clothing, especially around your waist and abdomen. Tight clothing also contributes to pressure on the LES muscle ring.

3. When bending, bend at the knees rather than at the waist. Bending at the waist is a common cause of heartburn in pregnancy.

4. Eat several small meals during the day in place of three larger meals. Eat slowly and chew your food well.

5. Have your last meal or snack at least two to three hours before bedtime. Allowing food to digest before you lie down can reduce heartburn.

6. Although you will want to drink eight to ten glasses of water daily, you should Avoid drinking large amounts of liquid during meals. Try to remember that a distended stomach will pressure the LES and cause heartburn.

7. Ward off potential heartburn by chewing gum after eating. The chewing action can help release air bubbles that contribute to heartburn and the gum stimulates the production of saliva, which can help neutralize acid.

CAUTION: The author is not a professional physician, and offers this information about heartburn in pregnancy for educational purposes only. Please seek advice from your health care provider.