After menstruation is clean, can the 5th day be pregnant together

If a woman has a chance of pregnancy on the 5th day after menstruation, but the chance of pregnancy is relatively low. Because the woman has a clean menstruation, the chance of ovulation on the 5th day is relatively small, so the chance of pregnancy is low. Suggestion: If a woman does not want to be pregnant, she needs to actively take contraceptive measures during the same room to reduce the chance of pregnancy.