There are many reasons for brown discharge a few days after menstruation, such as ovulation bleeding, cervical inflammation, cervical cancer and so on. 1. Ovulation bleeding: brown discharge a few days after menstruation may belong to ovulation bleeding, due to the change of hormone level in the body during the ovulation period, which can cause a little exfoliation of the endometrium bleeding. 2. Cervical inflammation: cervicitis, endometritis, cervical polyps, etc. can also appear vaginal bleeding, and the blood will turn brown when it accumulates in the vagina for a longer time. 3. Cervical cancer: brown discharge a few days after menstruation may also be caused by cervical cancer. As the tumor is constantly being rubbed, it leads to local epidermal detachment and damage, thus showing brown discharge a few days after menstruation. There are many reasons for brown discharge a few days after menstruation, so patients are advised to go to the hospital in time to improve the examination and take standardized treatment after finding out the reasons.