Pregnancy Countdown — 40 Weeks Left Until Due Date
You have 40 weeks left until your estimated due date (EDD). That means you are currently around week 1 of pregnancy. Below is a countdown-focused plan — what to prepare, what to pack and which milestones you should hit this week.
Pregnancy Countdown Calculator
Enter the first day of your last menstrual period (LMP). EDD = LMP + 280 days.
How to Use This Calculator
1. Enter the LMP date
Use the labelled fields and units that match your situation.
2. Calculate instantly
The result, visual comparison, and working update as values change.
3. Discuss the estimate with your clinician
Check assumptions, then copy, print, or share the calculation.
Practical Examples & Use Cases
| Starting date | Method | Calculation | Planning use |
|---|---|---|---|
| 1 Jan | LMP | +280 days | Estimated due date |
| Known clinical date | Ultrasound | Clinician dating | Confirm or revise estimate |
Baby at week 40
With 40 weeks left, your baby has already: Due date. Only ~5% of babies are born on their exact EDD. Baby continues growing.
Mother's body — what changes
With 40 weeks to go, your body is: Membrane sweep offered. Discuss induction if labour hasn't started.
Nutrition & supplements
Add ~450 kcal/day. Increase iron and DHA — brain growth peaks now. Split meals into 5–6 small portions to control heartburn and stable glucose. With only 40 weeks left, focus on iron-rich foods to build baby's stores for the first 6 months of life, and vitamin K-rich leafy greens.
Safe exercise
Reduce intensity but keep moving. Pelvic floor + squats prepare for labour. Avoid contact sports, ski, horse-riding and hot yoga. With 40 weeks left, prioritise perineal massage, pelvic tilts and squats — active preparation for the pushing stage.
Doctor visit checklist — week 40
- ✓Discuss induction plans if not in labour by 41 weeks
- ✓Weekly antenatal visit from week 36
- ✓Group B Strep swab at 35–37 weeks
- ✓Discuss induction/C-section timing at 39–40 weeks
Warning signs — call your provider immediately
- ⚠Heavy bleeding (soaking a pad in an hour)
- ⚠Severe abdominal pain that does not ease
- ⚠Fever above 38°C / 100.4°F
- ⚠Regular contractions before 37 weeks (preterm labour)
- ⚠Reduced fetal movement — fewer than 10 kicks in 2 hours
- ⚠Sudden swelling of face/hands + severe headache (preeclampsia)
- ⚠Bright red bleeding (placental abruption or previa)
Week 40 — Frequently asked questions
Content aligned with NHS antenatal guidance and ACOG term-delivery. Reviewed by Dr. Maria Rehman, MD (OB/GYN). This page is educational and does not replace personal medical advice — call your obstetrician for any concern.
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Pregnancy Countdown Calculator — Week 39
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Pregnancy Countdown Calculator — Week 41
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