🤰 39 Weeks Pregnant

You are in week 39 of your pregnancy — the third trimester, month 9. Your baby is about the size of a mini watermelon. Full term. The baby has a firm grasp and is ready to be born.

Baby is the size ofa mini watermelon
TrimesterThird
MonthMonth 9
Weeks to due date1

Your baby at 39 weeks

Average length50.7 cm (20 in), crown to heel
Average weight3.44 kg (7.6 lb)
Size comparisonA mini watermelon
Days completed273 of 280 (98%)

Your body at 39 weeks

To do this week

When to call your doctor

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Pregnancy Week Calculator

Find exactly how many weeks and days pregnant you are today, your trimester and your due date.
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Fetal Growth Chart: Baby Weight & Length by Week

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.
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Pregnancy Weight Gain Calculator

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.
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Pregnancy Calorie Calculator by Trimester

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.

Frequently asked questions

How many months is 39 weeks pregnant?

39 weeks is in month 9 of pregnancy as months are usually counted (about 9 calendar months since your last period), in the third trimester.

How big is the baby at 39 weeks?

About the size of a mini watermelon: around 50.7 cm long and 3.44 kg (7.6 lb).

What should I do at 39 weeks pregnant?

Rest when you can and keep track of movements.

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