Nausea & Digestion
Indigestion in Pregnancy
Fullness, discomfort or bloating after eating — common from the second trimester and usually eased by smaller, slower meals.
Written and fact-checked by the ParentVibes editorial team against WHO, NHS, ACOG and peer-reviewed guidance. Not yet reviewed by a named clinician.
Quick facts
- Most common in
- 2nd and 3rd trimesters
- Feels like
- Fullness, bloating or discomfort after eating
- Main cause
- Slower digestion + pressure from your uterus
- Usually eases
- With smaller meals and time
- See a doctor if
- Severe or persistent upper tummy pain
Feeling uncomfortably full, bloated or achy in your upper tummy after a meal — sometimes with a bit of nausea or a burning edge — is what most people mean by indigestion. It's an extremely common companion to pregnancy, especially once your bump is growing and there's less room for your stomach to do its job.
Most indigestion is simply your digestive system adjusting to pregnancy hormones and a growing uterus, and it responds well to small changes in how and what you eat. This guide explains why it happens, what genuinely helps, and the small number of warning signs that mean upper tummy discomfort needs medical attention rather than home remedies.
What is indigestion?
Indigestion, also called dyspepsia, describes a cluster of symptoms felt in the upper tummy, usually after eating: fullness, bloating, mild nausea, belching, or a gnawing or burning discomfort. It overlaps closely with heartburn, but indigestion is the broader term — you can have indigestion without the classic rising burn of acid reflux.
It tends to appear or worsen from the second trimester as your growing uterus takes up more space and presses on your stomach and gut, and as pregnancy hormones slow the pace at which food moves through your digestive system. It's uncomfortable but, in the vast majority of cases, not a sign that anything is wrong.
Indigestion and heartburn often overlap
Many people have both together — a burning feeling plus general fullness and bloating. The self-care that helps one usually helps the other.
What causes indigestion in pregnancy?
Indigestion in pregnancy is driven mainly by hormonal and physical changes to your digestive system.
Slower digestion
Progesterone relaxes the muscles of your gut, so food moves through more slowly. This gives more time for fermentation and gas, and can leave you feeling full and uncomfortable for longer after eating.
Your growing uterus
As your uterus expands, it crowds your stomach and intestines, leaving less room for a full meal and making fullness and discomfort more likely, especially later in pregnancy.
Eating habits
Eating quickly, eating very large meals, or eating rich, fatty or spicy food can all bring on or worsen indigestion.
Stress and tiredness
Being run-down or anxious can slow digestion further and make you more aware of normal gut sensations, which can feel like indigestion.
Prenatal iron supplements
Iron tablets, often recommended in pregnancy, can cause stomach upset, fullness or nausea in some people. Your doctor or midwife can suggest a different form or dose if this is a problem.
You may be more prone to indigestion if…
- You had indigestion or reflux before pregnancy
- You're in the second half of pregnancy
- You're carrying twins or more
- You take iron supplements that don't agree with you
When indigestion is normal
Mild, food-related indigestion is a normal and very common part of pregnancy, especially in the second and third trimesters. The following are reassuring:
- Fullness, bloating or mild discomfort that comes on after meals and gradually settles.
- Symptoms that improve with smaller meals, slower eating or an antacid.
- Occasional belching or a bit of nausea without severe pain.
- No fever, no vomiting, and you otherwise feel well.
| Usually normal indigestion | Needs medical attention | |
|---|---|---|
| Pain | Mild ache or fullness, comes and goes | Severe, persistent pain in the upper tummy |
| Location | General upper tummy or behind breastbone | Focused under the ribs, especially the right side |
| Other symptoms | None, or mild nausea/belching | Headache, vision changes, swelling, or vomiting |
| Response to self-care | Eases with smaller meals or antacids | No improvement, or getting worse |
It usually comes and goes with meals
Normal indigestion has a clear pattern — worse after eating, better between meals or overnight. Constant, unrelenting discomfort is more worth flagging to your midwife.
Warning signs — get medical help now
Occasionally, what feels like indigestion is a sign of something needing urgent attention, including pre-eclampsia. Contact your doctor or midwife urgently, or go to your nearest emergency department, if you have any of the following:
Seek urgent medical care if you have
- Severe or persistent pain in your upper tummy, especially just below the ribs on the right.
- That pain together with a bad headache, vision changes, sudden swelling of your face or hands, or vomiting — particularly in the second half of pregnancy.
- Vomiting blood, or vomit that looks like coffee grounds; black or tarry stools.
- Chest pain, especially if it spreads to your arm or jaw, or comes with breathlessness or sweating.
- Difficulty swallowing, or pain when swallowing.
- Fever alongside tummy pain.
If your baby's movements feel reduced or different from usual at any point, contact your maternity unit the same day.
Don't assume it's 'just' indigestion
Pain under the ribs — especially the right side — with a headache, vision changes or swelling needs an urgent blood pressure and urine check to rule out pre-eclampsia. It's always worth getting assessed rather than waiting it out.
Self-care & home remedies
Most pregnancy indigestion responds well to small, practical changes around meals. Try a combination and see what suits you.
Change how you eat
- Eat smaller meals more often rather than three large ones.
- Eat slowly and chew thoroughly.
- Avoid eating in a rush or while distracted.
- Stop eating a couple of hours before lying down or going to bed.
Choose gentler foods
- Cut back on fatty, fried, very rich or spicy meals if they trigger symptoms.
- Limit caffeine and fizzy drinks.
- Notice your personal triggers — they vary from person to person.
Support your gut day to day
- Take a short, gentle walk after meals rather than lying down straight away.
- Wear loose, comfortable clothing around your middle.
- Manage stress where you can — anxiety can make gut symptoms feel worse.
If iron supplements are upsetting your stomach, ask your midwife or doctor about taking them with food or trying a different preparation — don't just stop them without advice.
Antacids can help
Several antacids are considered safe in pregnancy and can ease indigestion quickly. Check with your pharmacist, doctor or midwife before starting one, especially if you're taking other supplements like iron.
When to consult a doctor
Book a non-urgent appointment with your doctor or midwife if:
- Indigestion is frequent, uncomfortable, or affecting your appetite.
- Self-care and antacids aren't giving enough relief.
- You suspect a supplement or medicine is causing your symptoms.
- Symptoms feel different from your usual pattern or are getting worse.
- You're not sure whether what you're feeling is normal indigestion or something else.
Keep track of your symptoms
A simple log of when discomfort happens and what you ate beforehand can help your midwife spot patterns and offer targeted advice.
Open the Pregnancy TrackerFrequently asked questions
What's the difference between indigestion and heartburn?
Heartburn is specifically a burning feeling caused by acid reflux. Indigestion is a broader term covering fullness, bloating, mild nausea or discomfort in the upper tummy after eating, with or without a burning sensation. Many people experience both together.
Is indigestion in pregnancy a sign of anything serious?
Almost always no — it's a normal effect of pregnancy hormones and your growing uterus on digestion. It becomes a concern only if it's severe, persistent, focused under your ribs, or comes with a headache, vision changes, swelling or vomiting, which can point to pre-eclampsia.
Can I take anything for indigestion while pregnant?
Many antacids are considered safe in pregnancy. Speak to your pharmacist, doctor or midwife before taking any medicine, including over-the-counter remedies, so you choose one appropriate for you.
Could my iron tablets be causing indigestion?
Yes, iron supplements can cause stomach upset, fullness or nausea in some people. Don't stop taking them without advice — ask your midwife or doctor about taking them with food or switching to a different form.
Why is my indigestion worse in the evening?
Lying down or reclining after your evening meal removes the help gravity gives during the day, and a fuller stomach late in the day sits closer to your growing uterus, both of which can make evening indigestion feel worse.
When should I worry about upper tummy discomfort?
Get checked urgently if pain is severe or persistent, sits under your ribs (especially the right side), or comes with a headache, vision changes, swelling or vomiting — these can be signs of pre-eclampsia rather than ordinary indigestion.
Your next steps
Track your pregnancy
Log symptoms week by week, get personalised tips, and see how your pregnancy is progressing.
Open Pregnancy TrackerPregnancy week-by-week
Follow your baby's growth and your body's changes from week 1 to 40 in plain language.
Explore the guideFind a gynaecologist
Have a personal concern? Book with a trusted obstetrician or gynaecologist near you.
Find a doctorRelated pregnancy symptoms
Helpful resources
Sources
- NHS — Pregnancy: common symptoms & concerns
- ACOG — Pregnancy resources (American College of Obstetricians and Gynecologists)
- WHO — Maternal health & pregnancy care
- NHS — Indigestion and heartburn in pregnancy
- ACOG — Common discomforts of pregnancy
Next review due: 6 January 2027.
Medical disclaimer
This page is general information about a common pregnancy symptom and does not replace personal medical advice. Every pregnancy is different. If you have severe pain, heavy bleeding, a bad headache with vision changes, reduced or absent baby movements, breathing difficulty, fever, or you feel something is seriously wrong, contact your doctor or midwife or go to your nearest emergency department straight away. When in doubt, always get checked — it is never a waste of anyone's time.
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