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: Read about your pregnancy at 24 weeks. advertisement
25 weeks
Your baby's wrinkled skin is starting to fill out with baby fat, making her look more like a newborn. Her hair is beginning to come in, and it has color and texture. Your baby is now the same weight as an average rutabaga. Read about your pregnancy at 25 weeks. 26 weeks
Your baby is now inhaling and exhaling amniotic fluid, which helps develop his lungs. These breathing movements are good practice for that first breath of air at birth. Your baby is the size of a bunch of scallions. Read about your pregnancy at 26 weeks. 27 weeks
This is the last week of your second trimester.