First Trimester
Pregnancy Week 12
Your baby is about the size of a plum 🫐 — end of first trimester.
🫐
Size comparison
≈ Plum
Length
5.4 cm
Weight
14 g
Milestone
End of first trimester
About 28 weeks to go until your due date (week 40).
Baby's development at week 12
The first trimester is complete — a major milestone. The fetus's reflexes are developing: fingers open and close, toes curl. The digestive system is practising peristalsis.
Many parents share pregnancy news after 12 weeks as miscarriage risk drops significantly.
Common symptoms at week 12
Reduced nausea for mostProtruding belly beginningIncreased energy
Eat more of
- ✓Folic acid (leafy greens, fortified cereals)
- ✓Iron-rich foods (lentils, spinach)
- ✓Calcium (dairy, fortified plant milk)
- ✓Vitamin B6 (bananas, avocados)
- ✓Whole grains
Foods to avoid
- ✕Alcohol
- ✕Raw/undercooked meat or fish
- ✕High-mercury fish (shark, swordfish)
- ✕Unpasteurised dairy
- ✕Excess caffeine (>200 mg/day)
- ✕Raw sprouts
Medically reviewed by First OPD Medical Team. Last reviewed on .
Based on average milestones from World Health Organization (WHO), ACOG, NHS UK. Educational only — not a substitute for personalised medical advice.
Track every week with a free First OPD account
Save your personalised week, get your due date, and book gynaecologists near you.