@ 32 weeks

from babycenter:

Your baby now weighs approximately 3.75 pounds/ 1.7 kilograms and is about 17 inches/ 42 centimeters long from head to toe. Although his lungs won't be fully developed until just before birth, your little one is inhaling amniotic fluid to exercise his lungs and practice breathing.

Some babies have a head of hair already, others have only a few wisps. Thick hair at birth doesn't necessarily mean thick hair later on but children with fine hair in childhood usually have thinner hair in adulthood.

You're probably gaining a pound/ 450 grams a week, largely because your baby is likely to gain more than half his birthweight during the seven weeks before birth. Make sure you are eating well in these last few weeks.

Note: Experts say every baby develops differently - even in utero. These fetal development pages are designed to give a general idea of how a fetus grows in the womb.