There are many reasons for the appearance of brown watery discharge, including small amount of endometrial shedding, uterine pathology, cervical pathology, vaginal inflammation, etc. 1. small amount of endometrial shedding, when women are in ovulation, the hormone level changes in the body, which will lead to a small amount of endometrial shedding mixed with discharge outflow, which will present the state of brown discharge. 2. uterine pathology, the more common ones include endometritis, which will cause an increase in leucorrhea and color changes. 3.