Having two periods in a row means having two consecutive intravaginal bleeding within a short period of time, and this phenomenon occurs for common reasons such as: 1, due to various reasons leading to ovarian endocrine dysfunction, resulting in women frequently experiencing the performance of having another period within a short period of time after the end of menstruation, with the amount and duration of bleeding basically the same as the usual menstruation; 2, ovulatory bleeding in the middle of two normal menstrual cycles, which only shows as a small amount of coffee-colored discharge or a small amount of dark red bleeding that lasts for a short period of time, usually 2-3 days; 3. It may be due to the combination of cervical erosion, cervical polyps, endometrial polyps and other diseases, and the phenomenon of vaginal bleeding after the stimulation of sexual life.