There are more reasons for a low menstrual flow and a brown discharge. First, if you have intercourse without measures during the month, there may be a chance of pregnancy. When there is a pre-miscarriage or bleeding in the bed when pregnant, there will also be brown discharge, it is recommended to exclude whether there is pregnancy. Secondly, when there is endocrine hormone imbalance, such as prolactinemia, polycystic ovaries, or even luteal insufficiency, the menstrual volume may become low and there may even be brown discharge. It is recommended to take a blood test for endocrine hormones on an empty stomach on the 2nd-5th day of menstruation and take oral medication for cycle regulation according to the situation. When there are uterine diseases, such as fibroids, endometrial polyps or ovarian cysts in both ovaries, it will affect the function of the ovaries and cause low menstrual volume, which will lead to brown discharge. In this case, you need to go to the hospital for ultrasound examination and if necessary, you can take oral menstrual regulating medication to restore your menstruation first.