There are several different reasons for ovulatory bleeding to the next period: 1. If it is a normal ovulatory bleeding problem, the general duration is about 3-5 days, the longest will not exceed 7 days. If the bleeding continues until the next menstruation, it is considered to be an endocrine disorder that causes abnormal uterine bleeding, so you need to check your body first. 2. It may also be caused by other gynecological diseases, such as pelvic inflammatory disease, endometritis and other diseases, which may cause uterine bleeding. 3. It can also lead to longer bleeding time and other problems. If there is abdominal pain or itching and odor in the pubic area during bleeding, you need to be alert to the appearance of gynecological inflammation.