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Why am I experiencing nausea and headaches after taking emergency contraceptive pill?

3 weeks ago

My period is regular, and I have a 30-day cycle. I had sex on 3 July. My period started on 29 June and ended on 2 July. We had sex on 3 July, and it was protected sex, but we had some doubts, so I took an I-pill within 2–3 hours on 3 July, the same day we had sex. On 9 July, I got some brown spotting during the day, and from the night, it started bleeding like a period. The bleeding continued for about 14 days. My normal period was due around 29 or 30 July, but I got my period on 5 August. It was heavy, painful, and lasted a long time. The bleeding stopped on 16 August. Since my period stopped, I have been experiencing nausea and random headaches. The nausea is occurring regularly.

Asked By mni | Female | Age 20

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3 weeks ago

Answers (1)

Pristyn Care Team

Simplifying Healthcare

Aug 28 2026

The symptoms you’re experiencing — nausea and headaches — are common side effects of emergency contraceptive pills, which can persist for a few weeks after taking them. The irregular bleeding and delayed period you experienced are also typical hormonal responses to emergency contraception. However, since the nausea is occurring regularly even after your period has ended, it is advisable to take a home pregnancy test to rule out pregnancy, and consult a doctor if symptoms persist or worsen.

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