Heartburn in Early Pregnancy: Complete Guide
That burning sensation behind your breastbone can catch you off guard in early pregnancy — many women assume heartburn is a third-trimester problem, but it can start as early as six weeks. Here's why it happens and how to get comfortable again.
Why Heartburn Starts So Early
Heartburn happens when stomach acid travels back up into your oesophagus, and pregnancy makes this more likely from very early on.
- Progesterone relaxes the ring of muscle (the oesophageal sphincter) that normally keeps stomach acid where it belongs.
- The same hormone slows down digestion generally, meaning food and acid sit in your stomach for longer.
- Even before your bump shows, hormonal changes alone are often enough to trigger reflux.
- Later in pregnancy, your growing uterus adds physical pressure on the stomach, which is why heartburn often gets worse as you progress.
Easing Heartburn Safely
Simple lifestyle adjustments help most people, and if you need more support there are pregnancy-safe medicines too:
- Eat smaller, more frequent meals rather than large ones that overfill your stomach.
- Avoid spicy, fatty, or very rich foods if they tend to trigger symptoms for you.
- Sit upright after eating and avoid lying down or bending over for a couple of hours.
- Try not to eat within a few hours of bedtime.
- Prop yourself up slightly higher with pillows at night to help keep acid down.
- Wear loose clothing around your waist and stomach.
- Ask your pharmacist or midwife about antacids such as Gaviscon or Rennie, which are considered safe to use in pregnancy when taken as directed.
When to Get Advice
Occasional heartburn is normal and not a cause for concern, but speak to your midwife, GP or pharmacist if over-the-counter antacids aren't helping, if you're struggling to eat or keep food down, or if you have severe pain, difficulty swallowing, or vomiting alongside the burning sensation. They can suggest a stronger, pregnancy-safe treatment if needed.
Frequently Asked Questions
Is heartburn normal in early pregnancy?
Yes. Progesterone relaxes the valve between your stomach and oesophagus, which allows acid to travel back up more easily. It can begin as early as six weeks and, for many women, tends to become more noticeable as pregnancy progresses.
What antacids are safe to take during pregnancy?
Antacids such as Gaviscon and Rennie are widely considered safe in pregnancy and are commonly recommended by midwives and pharmacists. Always check the packaging, follow the stated dose, and ask your pharmacist or GP if you're taking any other medication or need something stronger.
Can heartburn affect my baby?
No — heartburn is uncomfortable for you but does not harm your baby. It's simply a side effect of the hormonal and physical changes happening in your own digestive system, and it typically settles after birth.
This article is for informational purposes only and does not constitute medical advice.
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