13 weeks pregnant
Trimester 1 · about 2 months · baby is about the size of a peapod.
Baby at 13 weeksa peapod7.4 cm · 23 g
01020304050 cm
Your baby this week
Vocal cords form and the intestines move from the umbilical cord into the abdomen.
You this week
The last week of the first trimester.
Frequently asked questions
How many months is 13 weeks pregnant?
13 weeks is about 3.0 months of gestation, counted from the first day of your last period. You are in the first trimester.
How big is a baby at 13 weeks?
Around 7.4 cm long and 23 g, roughly the size of a peapod. These are averages; individual babies vary.
Not sure which week you're in? The pregnancy calculator works it out from your last period or due date.