When a woman has her period after a week: 1. It may be due to the middle of the menstrual cycle when ovulation occurs in the ovaries and the endometrium peels off due to a slight drop in estrogen levels, causing a small amount of blood to be discharged from the uterine cavity, which women mistake for menstruation. 2. It may also be due to menstrual disorders caused by fibroids and dysfunctional bleeding. 3. 3. It may also be related to endometrial exfoliation caused by emergency contraceptive pills. 4. When a woman suffers from chronic cervicitis such as cervical erosion or cervical polyps, it may also lead to vaginal bleeding. Therefore, when women have non-menstrual vaginal bleeding, they need to go to the hospital for gynecological ultrasound and physical examination in time and be treated with medication or surgery according to the cause.