The first stage of labor (6~12 hours) – time of replenishing gas, resting, and eating: The first stage of labor starts from the regular contraction of the uterus to the complete expansion of the cervix. If you are pregnant for the first time (primigravida), your first period will take about 12 hours; if you have given birth before (multiparous), it will take about 6 hours. Performance: When contractions begin to become regular, contractions will begin approximately every six or seven minutes and last for half a minute each time. As labor progresses, the intervals between uterine contractions gradually shorten, the duration and intensity of each contraction gradually increase, and the cervix opens slowly. you