12 Weeks Pregnant
At 12 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
- 28
Size of a lime
Your baby at 12 weeks
Your baby is about the size of a lime and can now make sucking movements and curl their toes. Reflexes are developing, and the kidneys have started making urine.
Your body at 12 weeks
The top of your uterus is rising above your pubic bone, which takes pressure off your bladder. The risk of miscarriage drops significantly after this point.
Common symptoms at 12 weeks pregnant
- Less frequent urination
- Dizziness
- Headaches
- More energy for some
Every pregnancy is different. Having none of these symptoms is normal too.
Tips for week 12
- Many people share their news around the end of the first trimester.
- Keep taking your prenatal vitamin with folic acid and iodine.
- Ask about the 11 to 14 week combined screening if you have not had it.
Your week 12 checklist
- Nuchal translucency scan (11 to 14 weeks)
- Keep taking your prenatal vitamin
- Plan how to share your news
Helpful at 12 weeks
12 Weeks Pregnant: your questions answered
How big is a baby at 12 weeks pregnant?
At 12 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 12 weeks pregnant?
12 weeks pregnant is month 3 of your pregnancy, in the first trimester. Your due date is 28 weeks away.
Is it safe to announce at 12 weeks?
Many people share their news at the end of the first trimester because the risk of miscarriage falls significantly after 12 weeks. When to tell people is entirely your choice.
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.