It's safe for a few days after aunt's end

Under normal circumstances, 7 days before menstruation and 7 days after menstruation are safe periods, and the probability of pregnancy is relatively low, about 15%. However, the premise of calculating safe periods is that the regular menstruation and ovulation days are relatively fixed. However, due to various factors such as large mood fluctuations, recent work and study pressures, insufficient rest, etc., irregular menstruation may cause ovulation to be delayed or advanced, thus affecting the calculation of safe periods. Therefore, the safety period is not safe and cannot completely prevent pregnancy. Therefore, if there is no intention of pregnancy, it is recommended to take other contraceptive methods, such as intrauterine devices, contraceptives, condoms, etc., which can effectively prevent contraception and prevent unnecessary troubles.