18 Weeks Pregnant: Baby Size, Development & Symptoms
| Baby's size | About the size of a sweet potato |
| Length | about 14 cm |
| Weight | about 190 g |
| Trimester | Second trimester, month 5 |
Your baby this week
The ears are in their final position and the baby may hear sounds.
Your body this week
Back ache is common as your bump grows.
Tip of the week
Talk and sing to your baby; they may be able to hear you.
Quick answers
How big is my baby at 18 weeks?
About the size of a sweet potato: around 14 cm long and around 190 g.
How many months is 18 weeks pregnant?
18 weeks is in month 5 of pregnancy, in the second trimester.