Third Trimester
Pregnancy Week 40
Your baby is about the size of a watermelon 🍉 — due date!.
Week 39Week 40 / 40
🍉
Size comparison
≈ Watermelon
Length
51.2 cm
Weight
3.5 kg
Milestone
Due date!
Baby's development at week 40
Your estimated due date has arrived! Only about 5% of babies are born on their due date, so stay patient. Your baby is perfectly ready — a fully formed human being waiting to meet you.
You've done it — 40 weeks of incredible work. Trust your body. Your baby will arrive when ready.
Common symptoms at week 40
NestingIrregular contractionsShow (blood-tinged mucus)Pelvic pressure
Eat more of
- ✓Calcium & Vitamin K (broccoli, kale)
- ✓DHA-rich fish (sardines, salmon — cooked)
- ✓Iron-rich foods to prevent anaemia
- ✓Fibre-rich foods to combat constipation
- ✓Small frequent meals to ease heartburn
- ✓Dates (studies suggest easier labour)
Foods to avoid
- ✕Alcohol
- ✕Gas-producing foods (beans, cabbage) if uncomfortable
- ✕Very spicy food if causing heartburn
- ✕Raw/undercooked meat
- ✕High-sodium processed food
- ✕Large meals that worsen reflux
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.
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