There is no menstrual period and dark brown blood is present. Clinically, if it occurs during the first half of the menstrual period, this condition is often caused by estrogen deficiency and can be treated with oral maternal health pellets. If the condition occurs in the middle of the menstrual period, it is often caused by ovulatory bleeding. It is recommended to start taking oral Glivec (half a tablet once a day for seven days) on the 12th day of menstruation, which can effectively treat ovulatory bleeding. If the dark brown vaginal bleeding occurs during the second half of the menstrual period, it is probably due to luteal insufficiency. It is recommended to take progesterone pills orally (two pills once a day for eight days) after ovulation.