Pregnancy week by week
Pick a week: your baby’s development, changes in the mother and what to do this week.
Trimester 1
Week 1
Week 2
Week 3
Week 4
0.1 cm
Week 5
0.2 cm
Week 6
0.6 cm
Week 7
1 cm
Week 8
1.6 cm
Week 9
2.3 cm
Week 10
3.1 cm
Week 11
4.1 cm
Week 12
5.4 cm
Week 13
7.4 cm
Trimester 2
Week 14
8.7 cm
Week 15
10.1 cm
Week 16
11.6 cm
Week 17
13 cm
Week 18
14.2 cm
Week 19
15.3 cm
Week 20
25.6 cm
Week 21
26.7 cm
Week 22
27.8 cm
Week 23
28.9 cm
Week 24
30 cm
Week 25
34.6 cm
Week 26
35.6 cm
Week 27
36.6 cm
Week 28
37.6 cm
Week 29
38.6 cm
Week 30
39.9 cm
Week 31
41.1 cm
Week 32
42.4 cm
Week 33
43.7 cm
Week 34
45 cm
Week 35
46.2 cm
Week 36
47.4 cm
Week 37
48.6 cm
Week 38
49.8 cm
Week 39
50.7 cm
Week 40
51.2 cm
Week 41
51.7 cm
Week 42
51.7 cm