16 weeks

YOUR BABY THIS WEEK

Your baby is on the move, and you may start to feel it! Your baby weighs almost three ounces (.08 kg) and is close to 5 inches (13 cm) in length.

As this week begins your baby has fingernails, and the hair on his or her head is starting to grow. Although baby's brain is still tiny, it is beginning to send signals to muscles that allow arms and legs to begin moving. The motion, called "quickening" can be slight or more robust, but don't be alarmed if you don't feel it this week, you will soon enough.