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Why do I get headaches during pregnancy?

Updated Sep 3, 20261 min readAnswer
On this pageShort answer What to do Common questions Related questions Sources
Short answer

Early-pregnancy headaches are usually hormonal and tension-type - rest, hydration, provider-approved acetaminophen. A severe headache after 20 weeks with vision changes or swelling is a same-day preeclampsia warning.

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What to do

1Hydrate, eat regularly, rest- the everyday drivers respond to basics.
2Confirm any painkiller first- acetaminophen is the usual safe choice; avoid ibuprofen later in pregnancy.
3Cool compress and dark room- medication-free relief.
4Severe headache after 20 weeks: call same day- especially with vision changes or swelling, per NHS guidance.

Common questions

Why do I get headaches during pregnancy?

Headaches in early pregnancy are common and usually benign: surging hormones, expanding blood volume, and changes in circulation all nudge headache-prone brains, and if you cut caffeine suddenly after the positive test, withdrawal headaches pile on. The NHS notes headaches are a frequent early-pregnancy complaint and that most improve as pregnancy progresses - many migraine sufferers actually get relief in the second and third trimesters. Tension-type headaches from stress, poor sleep, and hunger are the everyday kind, and dehydration is an easy fix people miss. Safe management: rest, hydration, regular meals, and acetaminophen - the painkiller considered safe in pregnancy, though always confirm with your provider or pharmacist, and avoid ibuprofen especially later in pregnancy. A cool compress on the forehead and a dark quiet room help without any medication. The rule to know cold: a severe headache after 20 weeks is not a headache problem - it is a blood pressure warning. Severe or persistent headache with vision changes - blurring, flashing lights - sudden swelling of face or hands, pain under the right ribs, or sudden vomiting can signal preeclampsia, and that combination means call your provider or maternity unit the same day. New headache patterns in the second half of pregnancy always deserve a mention, even when mild. Pymander is a free AI doctor, 24/7 by text. Describe the headache and your week of pregnancy, and it can help you judge urgency.

About this page. Written and maintained by the Pymander Health team. Last updated September 3, 2026.

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