Women & Girls Health
Pregnancy Week Calculator
Find your current week and trimester.
Pregnancy is counted in weeks from the first day of your last period, so you're already counted as "2 weeks" around the time you conceive. Trimesters are roughly: first (weeks 1–12), second (weeks 13–27), and third (weeks 28 to birth).
Educational only, not a medical diagnosis. Book antenatal care early and ask about HIV testing and prevention in pregnancy.
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