How does the brown secretion return a responsibility before menstruation

There are brown secretions before menstruation to consider ovulation bleeding, refers to the ovulation period after menstruation clean due to follicular fluid loss, resulting in a decline in estrogen levels in the body, resulting in endometrial shedding caused by bleeding. General bleeding volume is less, two to three days can disappear on their own, can be observed, if two to three consecutive menstrual cycles show ovulation bleeding, can be treated by oral contraceptives, such as estrogen and progesterone vascular therapy and artificial cycle simulation of natural menstrual cycle ovarian endocrine changes, the use of estrogen and progesterone to make corresponding changes in the endometrium, resulting in periodic shedding, adapted to puberty and reproductive age ovulation bleeding.