17 weeks

Your baby during week 17 is very mobile, gleefully moving his joints here, there and everywhere and he will continue to do so as you continue your pregnancy week by week. The cartilage making up the skeleton in your baby's body is starting to transform into bone. At 17 weeks, your baby should be hearing things. Your baby will start putting on some layers of fat in the weeks to come, though at this point in time, your baby is made up of primarily water

Our baby weighs as much as a turnip