Why Do I Have Headaches During Pregnancy?
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Medically reviewed by
Baby Circle Medical Board
Reviewed on 18 July 2026
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Usually hormones and dehydration — but watch later onesEvidence-based & doctor-reviewed
Headaches are common, especially in the first trimester, from hormone changes, increased blood volume, fatigue, dehydration, hunger or caffeine withdrawal. Most are harmless — but a severe headache later in pregnancy can signal high blood pressure.
Why they happen
Early headaches are often from hormones, more blood volume, tiredness, dehydration or cutting down caffeine. Tension and poor posture add to them.
How to ease them
- Drink water and eat regularly.
- Rest in a quiet, dark room; try a cool compress.
- Watch your posture.
- Use paracetamol only if your doctor agrees; avoid other painkillers unless advised.
When to see a doctor urgently
Seek care now for a severe headache after 20 weeks, especially with vision changes, swelling of face/hands, or upper-belly pain — possible signs of pre-eclampsia.
Frequently asked questions
Are headaches normal early on?
Yes, they are common in the first trimester due to hormones and other changes.
Which pain relief is safe?
Paracetamol is generally considered safe; check the dose with your doctor and avoid NSAIDs unless advised.
When is a headache an emergency?
A severe headache after 20 weeks with vision changes or swelling needs urgent review.
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Join The Circle40-Week GuideReferences
- WHO. Antenatal care recommendations. who.int
- ACOG. Pregnancy resources. acog.org
- NHS. Pregnancy guide. nhs.uk
- CDC. During Pregnancy. cdc.gov
- Office on Women's Health (US). womenshealth.gov
Related reading
Why Am I Dizzy?High Blood Pressure During PregnancyHow Much Water in Pregnancy?📖 40-Week Pregnancy Guide
Medical disclaimer: This article is for general education only and is not a substitute for professional medical advice. Always consult your doctor about your pregnancy and health, and seek care immediately for any warning signs. Reviewed by the Baby Circle Medical Board.