Where does the weight go during pregnancy?
Most of it is your baby, or at least the things that support your developing baby — even if you think it's all in your thighs:
Baby: 7.5 to 8.5 pounds
Amniotic fluid: 2 pounds
Placenta:1.5 to 2 pounds
Breast tissue: 1.5 to 2 pounds
Blood volume: 3 pounds
Uterus growth: 2 to 2.5 pounds
Water: 4 pounds
Fat stores: 8 pounds
Total: 29.5 to 32 pounds