There are several possibilities for brown discharge from underwear: First, there may be a brown discharge caused by the stimulation of intercourse after the end of menstruation or before the onset of menstruation, this situation is not necessary to deal with as long as the bleeding is not much. Second, ovulatory bleeding, there will also be brown discharge, if it occurs occasionally and the bleeding does not exceed the usual amount of menstruation it does not matter. If the bleeding is heavy or lasts for a long time, you need to go to the hospital in time to test the female hormone six. Third, after pregnancy, there is an aura of miscarriage, that is, women with a history of menopause, if brown discharge from the panties, consider the possibility of pre-eclampsia, it is recommended to go to the hospital to do blood HCG and progesterone testing, according to the situation of symptomatic treatment.