Intercourse just after the end of the menstrual period routinely does not have any adverse effects, except in one special case, where there is the possibility of accidental ovulation that can cause conception. There is also a situation where the menstrual period is not completely over and there is also a small amount of irregular bleeding. At this time, if intercourse increases the chance of infection, it is easy to cause retrograde infection in the vagina and pelvis and affect the health of the reproductive system, so it is more scientific to have intercourse after the menstrual period is completely over. The other thing is to master the time of ovulation and try to do a good job of contraception, because the cycle of ovulation is not fixed, and sometimes there may be unexpected ovulation just after menstruation, so if you have intercourse at this time, you should also pay attention to the possibility of conception.