It is possible to get pregnant after seven days of clean period and three days of intercourse because it is possible to have intercourse after seven days of clean period and three days of clean period, that is, the 10th day of menstruation, plus the sperm can survive in the female reproductive tract for a few days, so it is possible to conceive if the woman ovulates in front of the period. So in this case, if you want to prevent pregnancy, it is advisable to take the emergency contraceptive pill and take certain contraceptive measures to avoid pregnancy. If you are planning to get pregnant, it is advisable to buy a pregnancy test if your next menstrual period is delayed. Generally doctors do not recommend the use of safe period contraception because the success rate of this type of contraception is low.