After painless abortion, menstruation usually occurs in about a month, due to the different physical condition of individuals, the time will also vary, it is recommended to judge according to their own actual situation, it does not matter the latest time. Painless abortion is a means of terminating a woman’s pregnancy at the stage of pregnancy, and the procedure not only suctions out the gestational sac, but also suctions out the meconium tissue around the sac as well as the endometrial tissue. Generally, a new menstrual cycle begins after a painless abortion, and menstruation occurs after a month, but if it does not occur for a long time, the possibility of trauma from the abortion procedure should be considered. In addition, it is worth noting that women should pay close attention to their actual situation after the painless abortion surgery, regular review, if a long period of time without menstruation or abnormal bleeding, you should go to the hospital in time for examination, under the guidance of the doctor to actively intervene in the treatment.