It is possible for a woman to have a posterior uterus that becomes an anterior uterus. It is most common after an abortion, or an induction of labor. This is mainly because the uterus is located in the pelvic cavity and its position is relatively fixed, determined by several ligaments. These ligaments hold the uterus in a specific position in the pelvic cavity. For example, if the uterus was originally posterior, after pregnancy the ligaments relax and the uterus increases in size, the position of the uterus changes. When a woman is at rest after childbirth, the position or activity of the body can affect the normal repair of the uterus and its position. If a woman moves moderately after childbirth and takes a side lying position for a longer period of time, she can change the symptoms of posterior uterus position before pregnancy. If a woman often takes the supine position when resting in bed after delivery, the original anterior position of the uterus may become the posterior position, and during the recovery process after delivery, the posterior position of the uterus will be formed, causing the phenomenon of back trouble when menstruating or before menstruating. The above information is for reference only. Please refer to the doctor’s consultation for specific medication and treatment.