On this page
Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, usually. Heartburn is diagnosed from the story by video and treated step by step with antacids, alginates and then omeprazole when they are not enough; pain under the ribs after 20 weeks, difficulty swallowing, vomiting blood or weight loss goes to in-person care.
- What it is: acid and stomach contents rising into the gullet because progesterone relaxes the valve at the top of the stomach, slows emptying and the womb pushes the stomach up; heartburn affects up to 8 in 10 pregnancies, from around 12 weeks, worst in the third trimester.
- Medicine ladder: calcium or magnesium antacids and alginate raft preparations after meals and at bedtime first; omeprazole, the most studied acid-reducing tablet in pregnancy, when they fail; ranitidine is no longer available, and sodium bicarbonate and aluminium-heavy antacids are avoided.
- Iron: antacids block iron and folic acid absorption, so take them at least 2 hours apart from iron tablets and pregnancy vitamins; iron itself can worsen indigestion, which the doctor can help with by changing the preparation.
- How long: antacids work almost at once and alginates last 3 to 4 hours; omeprazole takes 1 to 4 days to reach full effect; heartburn tends to worsen as the bump grows and clears within days to weeks of the birth as the valve tightens again.
- Emergency: indigestion is never a 112 emergency; call 112 for a seizure, vomiting blood, or chest pain with breathlessness, and go to the maternity unit without delay for pain under the ribs after 20 weeks with headache, visual disturbance or sudden swelling.
After 20 weeks of pregnancy, do not assume upper-belly pain is indigestion. Pain high in the abdomen or under the ribs, especially on the right, with a severe headache, visual disturbance (flashing lights, blurring), sudden swelling of the face, hands or feet, or vomiting, can be pre-eclampsia. Contact your midwife or maternity unit immediately, at any hour, or call 112 if you cannot reach them or feel very unwell. Also get urgent in-person care for difficulty swallowing, vomiting blood or material like coffee grounds, or black tar-like stools.
What can I take for indigestion in pregnancy?
Start with mechanics: smaller meals eaten slowly, nothing large within 2–3 hours of bed, and the head of the bed raised. Antacids and alginate preparations, the kind that form a protective raft on top of the stomach contents, are considered suitable in pregnancy and are the usual first medicines, taken after meals and at bedtime. When symptoms keep breaking through, doctors can prescribe omeprazole, an acid-reducing tablet widely used in pregnancy.[1][3]
That ladder exists because pregnancy heartburn is mechanical and hormonal at once, and because each rung has good safety data behind it. Most women get control at the alginate step. The point of a consultation is to climb exactly as far as you need and no further, and to make sure nothing about your story argues for a different diagnosis altogether.
How an online consultation helps with indigestion in pregnancy
- The safety question answered properly: which antacids, alginates and acid reducers are considered suitable at your stage, with honest notes on each, instead of a shelf of products all warning you to ask a doctor.
- The <a href="https://www.mobidoctor.eu/what-we-treat/pregnancy-conditions/heart-and-lungs/high-blood-pressure">pre-eclampsia</a> line drawn clearly: the doctor actively checks that your “heartburn” is heartburn, because new upper-abdominal pain in later pregnancy has one dangerous mimic that must never be missed.
- Iron and antacids untangled: antacids block iron absorption when taken together. The doctor times them properly so your anaemia protection keeps working.
- A plan that scales with the trimester: heartburn typically worsens as the uterus grows. You leave with a stepped plan for the months ahead, not just a fix for tonight.
What the doctor checks in an online pregnancy indigestion consultation
The consultation is structured to confirm the pattern and rule out the mimics. The doctor will typically work through:
- The symptom itself: burning behind the breastbone, acid or food coming back up, bloating and burping after meals, and the timing, after eating, on lying down, or on bending.
- Your stage of pregnancy: heartburn can start in the first trimester but typically builds through the third as pressure rises; stage also frames what any new pain might mean.
- Warning symptoms, checked directly: pain high under the ribs (especially the right), severe headache, visual changes or sudden swelling after 20 weeks; difficulty swallowing; vomiting blood; black stools; and weight loss.[2]
- What you have already tried: which antacid or alginate, at what dose and timing, because “it didn’t work” often means “it was taken before meals instead of after”.
- Your other medicines and supplements: iron (which antacids block and reflux worsens), and anything else that irritates the stomach.
- Eating and sleeping patterns: meal sizes, late eating, trigger foods, caffeine, and how you prop yourself at night, the simple levers that genuinely move symptoms.
- Nausea and vomiting: where sickness dominates over burning, the assessment shifts, because that is a different pregnancy problem with its own care.
Why is heartburn so common in pregnancy?
Progesterone relaxes the valve between the oesophagus and the stomach, so acid escapes upwards more easily; digestion also slows, keeping the stomach fuller for longer; and from mid-pregnancy the growing uterus pushes the stomach upwards from below. It is a mechanical problem that intensifies as the bump grows, peaks in the third trimester, and resolves for the great majority of women soon after birth.[1] Heartburn is miserable, but it does not harm the baby, and the folklore that it predicts a hairy one is exactly that: folklore, plus one small study that made headlines.
Is omeprazole safe in pregnancy?
Omeprazole is the most-studied acid-reducing tablet in pregnancy, and large studies have not shown an increased risk of harm to the baby; it is prescribed when antacids and alginates are not enough.[3] That is honest reassurance, not a licence for self-medicating: the decision belongs in a conversation with a doctor, who confirms the diagnosis, the dose and the duration for your stage of pregnancy.
Two related honesty notes. Ranitidine, the acid reducer many people remember from earlier pregnancies, was withdrawn across the EU in 2020 over an impurity concern, so older advice mentioning it is out of date; other options have replaced it.[4] And acid reducers work best as a planned course with a review, not an open-ended habit: after birth, most women can stop them entirely, and the doctor builds that exit into the plan.
Which step of the pregnancy reflux ladder are you on?
This is the framework the doctors use, aligned with cited guidance:
Swipe sideways to compare →
| Presentation | Likely first step | Suitable for online care? | When referral or in-person care is needed |
|---|---|---|---|
| Burning after meals or on lying down, acid taste, burping | Meal and position changes, plus an antacid or alginate after meals and at bedtime[1] | Yes, often without a prescription | Not settling within 1–2 weeks of proper use |
| Reflux breaking through despite regular alginates | Omeprazole after video review, with dose and duration agreed[1][3] | Usually yes | No response to treatment, or any alarm feature appearing |
| Reflux plus iron supplements | Timing plan: iron and antacids separated by about 2 hours | Usually yes | If anaemia needs re-testing, bloods are arranged locally |
| New pain high under the ribs after 20 weeks, especially right-sided, or with headache, vision changes or swelling | Urgent maternity assessment for pre-eclampsia, including blood pressure and urine checks[2] | No | Immediately: midwife or maternity unit, or 112 |
| Difficulty swallowing, vomiting blood, black stools, or weight loss | In-person assessment and tests | No | Same day |
Not sure which row is you? A doctor can tell you in one consultation.
See available times →Treatment options for indigestion and heartburn in pregnancy
What you can do yourself
Eat smaller amounts more often, slowly, and finish eating 2–3 hours before lying down. Notice your own triggers rather than banning everything: fatty and spicy meals, chocolate, citrus, tomatoes, fizzy drinks and caffeine are the usual suspects, but they vary woman to woman. Raise the head of the bed 10–15 cm with blocks or a wedge (extra pillows alone tend to fold you at the waist and make it worse), and lie on your left side, which positions the stomach below the oesophagus. Loose clothing around the waist helps more than it sounds like it should. Antacid and alginate preparations from the pharmacy are considered suitable in pregnancy when used as directed; take them after meals and at bedtime, and separate them from iron tablets by about 2 hours so the iron still absorbs.[1][5]
Prescription treatment
A prescription is never issued without a consultation. After assessment, the doctor typically prescribes omeprazole where alginates are not enough, at the lowest effective dose with a review date; other acid reducers exist.[1][3] Where nausea and vomiting dominate, or pain does not behave like reflux, the doctor says so and redirects the work-up rather than stacking acid medicine on the wrong problem. Antibiotic-based treatment for Helicobacter pylori, sometimes relevant outside pregnancy, is generally deferred until after birth, and antibiotics are only ever prescribed when there are genuine signs they are needed.
When is it not just indigestion?
The one mimic that must never be missed sits in later pregnancy: pre-eclampsia can announce itself as pain high in the abdomen, classically under the right ribs, often with a severe headache, visual disturbance or sudden swelling, from 20 weeks onwards. It is caused by rising blood pressure affecting the liver, not by acid, and no antacid will touch it. That combination is checked urgently, in person, with a blood pressure cuff and a urine test, the same day it appears.[2] If heartburn medicine that previously worked suddenly stops explaining your pain, treat that change with respect.
Other patterns that step outside the reflux ladder: pain that bores through to the back after fatty food (gallstones are commoner in pregnancy), burning that comes with vomiting blood or black stools (a bleeding ulcer, rare but urgent), and difficulty swallowing, which always earns examination. Digestive complaints also travel in packs during pregnancy: many women juggling reflux are also managing constipation in pregnancy, and the same consultation can sort both. Outside pregnancy, the work-up is different again; the general indigestion treatment online guide covers that path.
When indigestion in pregnancy is treated online, and when you need in-person care
Treated online: a licensed doctor on Mobi Doctor manages typical pregnancy heartburn and indigestion at every stage: lifestyle plans, antacid and alginate guidance, omeprazole when the ladder reaches it, iron-timing conflicts, and reviews when symptoms change as the bump grows.
In-person care: any suspicion of pre-eclampsia (upper-abdominal pain after 20 weeks with headache, visual changes, swelling or simply feeling wrong), immediately to your midwife, maternity unit or emergency care, with 112 when you cannot reach them; alarm features, difficulty swallowing, vomiting blood, black stools, unexplained weight loss, for in-person tests; suspected gallstone pain; and severe vomiting with dehydration, which needs in-person treatment. The pregnancy conditions hub collects every pregnancy condition covered online.
When to get in-person care
Contact your midwife or maternity unit immediately, day or night, for new pain high in the abdomen or under the ribs after 20 weeks of pregnancy, especially with a severe headache, flashing lights or blurred vision, sudden swelling of the face, hands or feet, or vomiting: this can be pre-eclampsia, and it is checked the same day, not watched. Call 112 if you cannot reach them, have a seizure, or feel very unwell very fast. Also seek emergency care for vomiting blood or material like coffee grounds, black tar-like stools, or chest pain with breathlessness or spreading to your arm or jaw.
How Mobi Doctor works
- Book a time that suits you: open daily 7am–11pm CET. You can see a doctor over video, usually within 15 minutes. No subscription, exact price up front.
- Speak to a licensed doctor about indigestion and heartburn in pregnancy: a private video call: you describe what you feel, the doctor asks what matters, and you agree the right plan together.
- Leave with your plan: everything agreed before you hang up: your plan, and a prescription to use at a pharmacy near you where medication is clinically right for you. If your doctor decides you need to be seen in person, you get a full refund.
No sign-up needed
Not sure it’s heartburn? Tick every symptom you have to see each page that mentions it. It finds the right page, not a diagnosis: a doctor gives you that on a video call.
Tap the body — an area or a point — to browse symptoms anywhere
Not sure this is the right page? Look up any symptom in the full symptom checker, or book and describe it to a doctor.
Frequently asked questions about indigestion and heartburn in pregnancy
What causes indigestion and heartburn in pregnancy?
Progesterone relaxes smooth muscle everywhere, including the valve that keeps acid in the stomach, so acid flows back into the gullet; the same hormone slows stomach emptying, so meals sit for longer; and from mid-pregnancy the womb pushes the stomach upwards and squeezes it. Fatty, spicy and acidic food, caffeine, large meals, bending, lying flat after eating and iron tablets all add to the heartburn, so timing and posture matter as much as medicine.
What are the symptoms of heartburn and indigestion in pregnancy?
Heartburn in pregnancy is a burning pain behind the breastbone rising towards the throat, often with a sour or bitter taste, burping, bloating, feeling full quickly, nausea, regurgitating food, a cough or hoarseness at night and worse symptoms when lying down or bending; it usually starts from about 12 weeks and worsens in the third trimester. Pain high under the right ribs after 20 weeks, difficulty swallowing, vomiting blood or weight loss are not heartburn.
Can an online doctor prescribe omeprazole for heartburn in pregnancy?
Yes, where it is the right step. After a video assessment of your indigestion, stage and medicines, the doctor can prescribe omeprazole when antacids and alginates are not enough, with the prescription usable at a pharmacy near you, and explain how to take it for the best effect. A prescription is never issued without a consultation, and warning symptoms such as pain under the ribs after 20 weeks are directed to in-person care.
Which antacids are safe for indigestion during pregnancy?
Calcium- and magnesium-based antacids and alginate raft preparations are considered suitable in pregnancy when used as directed, taken after meals and at bedtime; calcium-based ones double as a calcium source. Avoid sodium bicarbonate, which causes fluid retention, antacids high in aluminium or magnesium trisilicate in large amounts, and take any antacid two hours apart from iron tablets and pregnancy vitamins, whose absorption they block.
Are alginate heartburn remedies safe while pregnant?
Yes. Alginates form a floating raft on top of the stomach contents that physically blocks acid from rising, act locally rather than being absorbed, and have a long record of use in pregnancy. They work best taken after meals and at bedtime, last three to four hours, and often control heartburn for weeks on their own; when burning still wakes you despite them, that is the cue for the next step rather than more sachets.
Why is my heartburn worse at night, and what helps?
Lying flat removes gravity, so acid reaches the gullet easily, and a slow pregnant stomach is often still full at bedtime. Finish eating three hours before lying down, take an alginate last thing, raise the head of the bed by 10 to 15 cm with blocks or a wedge rather than piling pillows, and sleep on your left side, which keeps the stomach below the gullet; evening omeprazole helps when heartburn still wakes you.
Can heartburn in pregnancy be a sign of something serious?
Usually not, but there is one exception worth memorising: after 20 weeks, pain high in the belly or under the right ribs, especially with a severe headache, visual disturbance, sudden swelling of the face and hands, nausea or vomiting, can be pre-eclampsia rather than indigestion, and antacids that do nothing are a clue. That needs the maternity unit without delay. Difficulty swallowing, vomiting blood or black stools also need in-person assessment.
Will my heartburn stop after the birth?
For the great majority of women, yes, within days to weeks of delivery, as progesterone falls, the valve tightens and the pressure comes off the stomach. Heartburn that continues months after the birth, or that was present before pregnancy, is ordinary reflux and is treated in the usual way. Women who had heartburn in one pregnancy usually have it again in the next, often starting earlier.
Which heartburn medicines are used in pregnancy when antacids stop working?
There is a well-trodden ladder for indigestion in pregnancy. Simple antacids and alginates come first and fix most weeks. When burning still wakes you or returns daily despite them, omeprazole, the most-studied acid-reducing tablet in pregnancy, is added, usually once a day. Ranitidine is no longer available; famotidine is an alternative; and anything that fails all of these is reassessed for a different cause rather than escalated further.
How long does heartburn last in pregnancy?
Heartburn can appear from about 12 weeks, builds as the womb rises and is usually worst in the last three months, easing slightly when the baby drops into the pelvis and clearing within days to weeks of the birth. Antacids relieve an episode almost at once, alginates hold for three to four hours, and omeprazole takes one to four days to reach full effect; indigestion not improving within two weeks is reassessed.
What can I do myself about indigestion in pregnancy?
Eat small meals often, chew slowly, finish three hours before bed, sit upright for an hour after eating, avoid fatty, spicy and acidic food, chocolate, mint, caffeine, fizzy drinks and alcohol, drink between rather than with meals, loosen waistbands, bend at the knees not the waist, raise the head of the bed, sleep on your left side, stop smoking, and take antacids two hours away from iron; chewing sugar-free gum after meals neutralises acid.
How can I prevent heartburn during pregnancy?
Prevent heartburn by building the routine early, before the bump compresses the stomach: small early meals, upright posture after eating, a raised bedhead and left-side sleeping, avoiding your trigger foods, keeping weight gain within the advised range, and using an alginate after the evening meal from the second trimester if you had heartburn in a previous pregnancy. Starting prevention at 20 weeks is easier than treating established reflux at 34.
Is it heartburn, pre-eclampsia or gallstones?
Heartburn burns behind the breastbone after meals or lying down and eases with antacids. Pre-eclampsia pain is high under the right ribs after 20 weeks, with headache, visual change or swelling, and antacids do nothing: maternity unit without delay. Gallstone pain is severe, comes in waves under the right ribs after fatty food, often with vomiting, and can last hours: in-person assessment. Chest pain with breathlessness or sweating is a 112 call.
- Dyspepsia (pregnancy-associated): Clinical Knowledge Summary, NICE, National Institute for Health and Care Excellence, revised 2023.
- Hypertension in pregnancy: diagnosis and management (NG133), NICE, National Institute for Health and Care Excellence, 2019 (updated 2023).
- Best use of medicines in pregnancy (bumps), UKTIS, UK Teratology Information Service, 2024.
- Ranitidine-containing medicinal products: EU-wide suspension, EMA, European Medicines Agency, 2020.
- Interventions for heartburn in pregnancy, Cochrane Database of Systematic Reviews, 2015.
- Indigestion and heartburn in pregnancy, NHS, National Health Service (UK), reviewed November 2023.
This page is for information only and is not a substitute for a medical consultation. Guideline links are provided for transparency; treatment decisions are made with your doctor.
Related conditions
From the Mobi Doctor podcast
The 10 Most Common Travel Illnesses
The travel illnesses doctors see most often in Europe, and how to handle each one away from home.
Listen · 23 Feb 2026 → Podcast · 13:26How to Stay Healthy on a Long Flight
Practical steps for circulation, hydration and infection risk before, during and after a long flight.
Listen · 23 Feb 2026 → Podcast · 15:41Debunking Gut Health Myths
What the evidence really says about gut health, and the popular claims that do not hold up.
Listen · 23 Feb 2026 →Speak to a doctor about indigestion and heartburn in pregnancy over video, usually within 15 minutes
Licensed doctors · open daily 7am–11pm CET · exact price before payment
See available times →