39 Weeks Pregnant: Baby Size, Development & Symptoms
| Baby's size | About the size of a small watermelon |
| Length | about 51 cm |
| Weight | about 3.3 kg |
| Trimester | Third trimester, month 9 |
Your baby this week
The baby is full term. Their brain is still developing rapidly.
Your body this week
You may feel more Braxton Hicks contractions.
Tip of the week
Stay close to home and keep your phone charged.
Getting ready for your newborn
Most babies born now weigh 2.5 to 4 kg and fit NB size diapers. Plan on 10 to 12 a day. Pack your hospital bag if you haven't yet.
Quick answers
How big is my baby at 39 weeks?
About the size of a small watermelon: around 51 cm long and around 3.3 kg.
How many months is 39 weeks pregnant?
39 weeks is in month 9 of pregnancy, in the third trimester.