Baby is the size of a carrot
Trimester Second
Month Month 5
Weeks to due date 19
👶 Your baby at 21 weeksMovements become stronger and more regular. The baby has sleep and wake cycles. 🤰 Your body at 21 weeksYou may notice stretch marks and a dark line down the bump (linea nigra). ✅ To do this weekKeep a healthy weight gain: about 11–16 kg in total for a normal pre-pregnancy BMI. 🚨 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) Vomiting so much you cannot keep fluids down 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.
← 20 weeks pregnant 22 weeks pregnant → ❓ Frequently asked questions
How many months is 21 weeks pregnant? 21 weeks is in month 5 of pregnancy as months are usually counted (about 4.8 calendar months since your last period), in the second trimester.
How big is the baby at 21 weeks? About the size of a carrot: around 26.7 cm long and 399 g (14.1 oz).
What should I do at 21 weeks pregnant? Keep a healthy weight gain: about 11–16 kg in total for a normal pre-pregnancy BMI.
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