Title: Fetal development week by week | BabyCenter
Headings: Fetal development week by week
Fetal development week by week
What does your baby look like now?
2 weeks: Fertilization
3 weeks: Implantation
4 weeks
5 weeks
6 weeks
7 weeks
8 weeks
9 weeks
10 weeks
11 weeks
12 weeks
13 weeks
Entering the second trimester: What lies ahead
14 weeks
15 weeks
16 weeks
17 weeks
18 weeks
19 weeks
20 weeks
21 weeks
22 weeks
23 weeks
24 weeks
25 weeks
26 weeks
27 weeks
Entering the third trimester: What lies ahead
28 weeks
29 weeks
30 weeks
31 weeks
32 weeks
33 weeks
34 weeks
35 weeks
36 weeks
37 weeks
38 weeks
Turning full term
39 weeks
40 weeks
41 weeks
Labor and delivery
Pregnancy resources

Content: His fingers will soon begin to open and close, toes will curl, and his mouth will make sucking movements. He'll feel it if you gently poke your tummy – though you won't feel his movements yet. Your baby is the size of a lime. Read about your pregnancy at 12 weeks. 13 weeks
This is the last week of your first trimester. Your baby's tiny fingers now have fingerprints, and her veins and organs are clearly visible through her skin. If you're having a girl, her ovaries contain more than 2 million eggs. Your baby is the size of a pea pod. Read about your pregnancy at 13 weeks. Entering the second trimester: