First trimester (weeks 1–12)
The most symptom-intensive period for many women: nausea (affects 70–80% of pregnancies, typically improving by week 12–14), extreme fatigue, breast tenderness, frequent urination and heightened smell sensitivity. The 12-week scan (nuchal translucency) screens for chromosomal conditions. Many women don't disclose pregnancy until after this scan. Start folic acid (400mcg/day) ideally before conception and continue until week 12. Use our free symptom tracker to log the first trimester.
Second trimester (weeks 13–26)
The 'golden trimester' for most women — nausea typically resolves, energy returns, and the bump becomes visible. The 20-week anomaly scan is the most detailed scan in the pregnancy. Most people feel movement ('quickening') between weeks 16–22. Anaemia is common — iron-rich foods and supplementation if recommended. The baby's movements become increasingly distinct and should be tracked from around week 24.
Third trimester (weeks 27–40)
The preparation phase. Hospital bag by 36 weeks (babies are full term from 37 weeks). Birth plan discussed with midwife at the 36-week appointment. Reduced fetal movements (fewer than 10 movements in a 2-hour period after 24 weeks) should always be reported to the midwife on the same day — never ignore them. Use our free third trimester checklist to track every preparation task.
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