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Week 13 of Pregnancy

Your baby is the size of a Peach

2.9 in (7.4 cm)0.81 oz (23 g)
Second Trimester

Baby Development This Week

Welcome to the second trimester! Baby's intestines have moved from the umbilical cord into the abdomen. Vocal cords are forming.

What You Might Be Feeling

Energy levels may improve. The risk of miscarriage drops significantly. Your appetite may increase.

Medical Appointments and Tests

Second trimester begins. Many women feel this is the most comfortable trimester.

Frequently Asked Questions

How big is my baby at 13 weeks pregnant?

At week 13, your baby is about the size of a peach — approximately 2.9 inches long and weighing about 0.81 ounces.

What should I expect at 13 weeks pregnant?

At 13 weeks, your baby is the size of a peach. Every pregnancy is different, but common experiences at this stage include physical changes, new symptoms, and exciting developmental milestones for your baby.

Want to know your due date?

Get your personalized pregnancy story card with milestones, zodiac sign, and more.

Calculate Your Due Date
Note: This calculator provides estimates based on standard medical formulas. Please consult your healthcare provider for personalized guidance.