Baby is the size of a small pumpkin
Trimester Third
Month Month 9
Weeks to due date Due this week
👶 Your baby at 40 weeksYour due date! Only about 4% of babies arrive on the exact day. The average newborn weighs about 3.3–3.5 kg and is about 50 cm long. 🤰 Your body at 40 weeksSigns of labour: regular contractions, waters breaking, a show, backache. ✅ To do this weekIf labour has not started, your doctor will check you and the baby and discuss options. 🚨 When to call your doctorVaginal bleeding or fluid leaking Severe tummy pain or cramping Fever over 38 °C Severe headache, blurred vision or sudden swelling of face or hands (pre-eclampsia signs) Your baby moving less than usual Find exactly how many weeks and days pregnant you are today, your trimester and your due date.
See your baby's average weight and length for any week of pregnancy (8–42 weeks), the normal weight range, and a size comparison, with a full fetal growth chart.
Find how much weight you should gain in pregnancy — in total and by each week — from your pre-pregnancy weight and height, using the IOM 2009 guidelines, with a week-by-week chart in kg.
Find how many calories you need a day in each trimester of pregnancy, by your weight, height, age and activity, using Indian (ICMR), US (IOM) or UK (NHS) guidelines.
← 39 weeks pregnant 41 weeks pregnant → ❓ Frequently asked questions
How many months is 40 weeks pregnant? 40 weeks is in month 9 of pregnancy as months are usually counted (about 9.2 calendar months since your last period), in the third trimester.
How big is the baby at 40 weeks? About the size of a small pumpkin: around 51.2 cm long and 3.62 kg (8 lb).
What should I do at 40 weeks pregnant? If labour has not started, your doctor will check you and the baby and discuss options.
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