🤰 Pregnancy week by week

13 Weeks Pregnant: Baby Size, Development & Symptoms

Your baby is about the size of a lemon.

By Cushies Editorial Team · 2 min read · Updated 23 August 2026

Baby's size	About the size of a lemon
Length	about 7.4 cm
Weight	about 23 g
Trimester	First trimester, month 3

Your baby this week

Vocal cords are forming, and the intestines move into the abdomen.

Your body this week

Welcome to the second trimester. Energy often starts to come back.

Tip of the week

Keep taking iron and calcium supplements as your doctor advises.

Quick answers

How big is my baby at 13 weeks?

About the size of a lemon: around 7.4 cm long and around 23 g.

How many months is 13 weeks pregnant?

13 weeks is in month 3 of pregnancy, in the first trimester.

This article is general information, not medical advice. If you are worried about your health or your baby's, please talk to your doctor.

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