Your pregnancy and baby guideIndigestion and heartburn in pregnancy
Indigestion, also called heartburn or acid reflux, is common in pregnancy. It can be caused by hormonal changes and the growing baby pressing against your stomach.
You can help ease your indigestion and heartburn by making changes to your diet and lifestyle, and there are treatments that are safe to take in pregnancy.
Symptoms of indigestion and heartburn
Symptoms of indigestion and heartburn include:
- a burning sensation or pain in the chest
- feeling full, heavy or bloated
- burping or belching
- feeling or being sick
- bringing up food
Symptoms usually come on soon after eating or drinking, but there can sometimes be a delay between eating and developing indigestion.
You can get symptoms at any point during your pregnancy, but they are more common from 27 weeks onwards.
Things you can do to help with indigestion and heartburn
Changes to your diet and lifestyle may be enough to control your symptoms, particularly if they are mild.
You're more likely to get indigestion if you're very full.
If you're pregnant, it may be tempting to eat more than you would normally, but this may not be good for you or your baby.
Change your eating and drinking habits
You may be able to control your indigestion with changes to your eating habits.
It can help to eat small meals often, rather than larger meals three times a day, and to not eat within three hours of going to bed at night.
Cutting down on drinks containing caffeine, and foods that are rich, spicy or fatty, can also ease symptoms.
Sit up straight when you eat. This will take the pressure off your stomach. Propping your head and shoulders up when you go to bed can stop stomach acid coming up while you sleep.
Smoking when pregnant can cause indigestion, and can seriously affect the health of you and your unborn baby.
When you smoke, the chemicals you inhale can contribute to your indigestion. These chemicals can cause the ring of muscle at the lower end of your gullet to relax, which allows stomach acid to come back up more easily. This is known as acid reflux.
Smoking also increases the risk of:
- your baby being born prematurely (before week 37 of your pregnancy)
- your baby being born with a low birth weight
- sudden infant death syndrome (SIDS), or "cot death"
There's lots of help available to stop smoking. Talk to your midwife or call the NHS Smokefree helpline on 0300 123 1044. Find out more about stopping smoking in pregnancy.
Drinking alcohol can cause indigestion. During pregnancy, it can also lead to long-term harm to the baby. The Chief Medical Officers of the UK say it's safest to not drink alcohol at all in pregnancy.
Find out more about alcohol and pregnancy.
When to get medical help
See your midwife or GP if you need help managing your symptoms or if changes to your diet and lifestyle don't work. They may recommend medicine to ease your symptoms.
You should also see your midwife or GP if you have any of the following:
- difficulty eating or keeping food down
- weight loss
- stomach pains
Your midwife or GP may ask about your symptoms and examine you by pressing gently on different areas of your chest and stomach to see whether this is painful.
If you're taking prescription medicines
Speak to your GP if you're taking medication for another condition, such as antidepressants, and you think it may be contributing to your indigestion. Your GP may be able to prescribe an alternative medicine.
Never stop taking a prescribed medication unless you're advised to do so by your GP or another qualified healthcare professional who's responsible for your care.
Medicines for indigestion and heartburn
Medicines for indigestion and heartburn during pregnancy include:
- antacids – to neutralise the acid in your stomach (some are available over the counter from a pharmacist)
- alginates – to relieve indigestion caused by acid reflux by stopping the acid in your stomach coming back up your gullet
You may only need to take antacids and alginates when you start getting symptoms. However, your GP may recommend taking them before symptoms come on – for example, before a meal or before bed.
If you're taking iron supplements as well as antacids, don't take them simultaneously. Antacids can stop iron from being absorbed by your body.
If antacids and alginates don't improve your symptoms, your GP may prescribe a medicine to reduce the amount of acid in your stomach. Two that are widely used in pregnancy and not known to be harmful to an unborn baby are:
- ranitidine – a tablet you take twice a day
- omeprazole – a tablet you take once a day
Causes of indigestion in pregnancy
Symptoms of indigestion come when the acid in your stomach irritates your stomach lining or your gullet. This causes pain and a burning feeling.
When you're pregnant, you're more likely to have indigestion because of:
- hormonal changes
- the growing baby pressing on your stomach
- the muscles between your stomach and gullet relaxing, allowing stomach acid to come back up
You may be more likely to get indigestion in pregnancy if:
- you had indigestion before you were pregnant
- you've been pregnant before
- you're in the later stages of pregnancy
Page last reviewed: 19/04/2016
Next review due: 19/04/2019