The process of childbirth is the process whereby an infant is born. It involves three main stages: labor, delivery, and the postpartum period.The first stage of labor is characterized by contractions of the uterus, which serve to open the cervix. The second stage of labor is the delivery of the baby, which is typically done through vaginal birth. The third and final stage of labor is the postpartum period, which is the time period immediately following the delivery of the baby.