After abortion, the enlarged uterus during pregnancy will gradually return to its normal size, so there will be contractions after abortion, which usually manifest as paroxysmal lower abdominal cramps after abortion. However, if there is persistent pain with fever after the abortion, it is not considered as contractions but as possible infection. Therefore, if this occurs, it is important to review the uterine adnexal ultrasound and blood work regularly. If the uterus is not contracting well after the abortion, there may be more vaginal bleeding than the menstrual flow, so you need to use pro-uterine contraction medications such as contractin to promote contraction and recovery of the uterus to avoid excessive vaginal bleeding.