Your due date is the first thing you hold onto when you find out you're expecting, but it actually tells you much more than just when your baby might arrive. It gives you a clear idea of where you are in your pregnancy and what changes are happening inside your body each week. It also helps you match your baby’s development with what you feel daily—like when organs are forming, when movements begin, or when your baby starts responding to sounds. Many moms don’t realize how closely their physical and emotional experiences follow this timeline.