After the end of menstruation, there will be brown secretions, during this period of coitus, the chances of pregnancy will be relatively low, because normally speaking, ovulation in the 14 days before menstruation, rather than in the end of menstruation, and the occurrence of brown secretions indicates that the endometrial lining is not fully restored to the normal situation, coitus is not conducive to the implantation of, so the chances of pregnancy is very low. If you don’t want to take the emergency contraceptive pill, you can buy a pregnancy test 12 days after intercourse to rule out the possibility of pregnancy. At the same time there is brown discharge is not recommended to have intercourse, because it will cause a persistent increase in brown discharge, and on behalf of the cervical canal is open, more likely to cause cross-infection, there will be endometritis, salpingitis and even pelvic inflammatory disease chances of occurring, but also cause abdominal pain uncomfortable performance, so as far as possible in the completely clean 2-3 days before having intercourse.