13 Weeks Pregnant
At 13 weeks pregnant, your baby is about the size of a lime.
- Length
- 5.4 cm (2.1 in)
- Weight
- 14 g (0.5 oz)
- Trimester
- First
- Month
- Month 3
- Weeks to go
- 27
Size of a lime
Your baby at 13 weeks
About the size of a lime, your baby has unique fingerprints forming on their fingertips. The intestines, which grew partly inside the umbilical cord, have moved into the abdomen.
Your body at 13 weeks
This is the last week of the first trimester. Energy often returns, and nausea fades for most people, though some have it longer.
Common symptoms at 13 weeks pregnant
- Returning energy
- Less nausea
- Growing breasts
- Vaginal discharge (thin and milky is normal)
Every pregnancy is different. Having none of these symptoms is normal too.
Tips for week 13
- Start or continue a gentle exercise routine.
- Begin moisturizing your belly if your skin feels itchy as it stretches.
- Plan how you will tell your employer.
Your week 13 checklist
- Start or continue gentle exercise
- Moisturize your belly daily
- Plan when to tell your employer
Helpful at 13 weeks
13 Weeks Pregnant: your questions answered
How big is a baby at 13 weeks pregnant?
At 13 weeks your baby is about the size of a lime: around 5.4 cm (2.1 in) long and weighing about 14 g (0.5 oz). Every baby grows at their own pace.
How many months is 13 weeks pregnant?
13 weeks pregnant is month 3 of your pregnancy, in the first trimester. Your due date is 27 weeks away.
Is 13 weeks the end of the first trimester?
Yes. The first trimester runs to the end of week 13, and the second trimester starts at week 14.
Sources
This guide is written from public guidance by the American College of Obstetricians and Gynecologists (ACOG), the NHS, the CDC and the World Health Organization. Baby sizes are averages; your baby may be bigger or smaller and still perfectly healthy.
General information only, not medical advice.
History of updates
- : Added a weekly checklist and common questions.
- : Matched fruit, length and weight to the Prego app.
- : Published.