True labor refers to the process of regular contractions of the uterus that lead to the dilation of the cervix, signaling the onset of childbirth. These contractions become progressively stronger, longer, and closer together over time. True labor typically occurs after the 37th week of pregnancy and is a key indicator that the body is preparing for delivery. During true labor, women may experience additional symptoms such as back pain, pressure in the pelvis, and the release of the mucus plug. Unlike Braxton Hicks contractions, which are often irregular and do not lead to labor, true labor contractions indicate that the baby is moving into position for birth.