Your baby is approximately 17 inches and weighs about 4.75 pounds. It is important that you take in enough calcium because the baby's skeletal structure is hardening this week. But the bones in his skull aren't fused together yet, allowing them to move and slightly overlap, making it easier for him to fit through the birth canal. In fact, the bones in his skull won't fuse entirely until early adulthood so they can grow as his brain expands during childhood. Your baby will be set in its delivery position (either head or bottom) during this week.
