Natural childbirth is generally divided into three stages of labor, and each stage of labor is a major challenge for the expectant mother. Understanding the relevant knowledge of each stage of labor can help expectant mothers to \”get through\” smoothly. The first stage of labor (6-12 hours) – replenishing energy, resting, and eating. Time: The first period is from the regular contraction of the uterus to the complete dilation of the cervix. If you are a primiparous woman giving birth for the first time, your first period will take about 12 hours; if you are a multiparous woman who has given birth before