After the menstrual period of 7 days with brown discharge is not able to cohabit, because of the following reasons: 1, the menstrual period is not completely over, the normal menstrual period in 3-5 days, but in the stimulation of certain reasons, the menstrual period may be delayed, so there will still be brown blood out. As the cervical opening is more relaxed during menstruation, and there are ruptured small blood vessels in the uterine cavity, at this time, the male genital organs of coitus will bring external bacteria into the vagina, and retrograde infection is easy to endometritis, adnexitis and pelvic inflammatory disease, which affects the quality of life in the future. In addition, coitus will also cause pelvic congestion, the uterus is less likely to return to health. 2, after the end of menstruation, there is still brown discharge, may also be caused by inflammation, coitus may make the disease more serious. So you should go to the hospital for a checkup, if there is no abnormality, wait for the brown discharge to disappear after 2-3 days, you can have intercourse, but pay attention to contraception.