afterpain [AS, aefter + Gk, poine, penalty] , one of many contractions of the uterus common during the first days after childbirth. Afterpains tend to be strongest during breastfeeding, in multiparas, after the birth of large babies, and after overdistension of the uterus. They usually resolve spontaneously but may require analgesia. Afterpains are normal and are an indication that the uterus is contracting as it should.