Bleeding 10 days after taking emergency contraceptive pills has the possibility of pregnancy. Emergency contraceptive pills do not achieve 100% contraceptive effect, bleeding after 10 days of taking emergency contraceptive pills may be related to hormonal effects, menstrual visits and other gynecological diseases. 1. Hormonal effects: After taking emergency contraceptive pills, the hormonal changes in a woman’s body are large, and withdrawal bleeding may occur about 3-7 days after taking the pills, and generally speaking the amount of blood is very small. Retreating bleeding does not exclude the possibility of pregnancy, only that the possibility of pregnancy is extremely low. 2. Arrival of menstruation: If the amount of bleeding is almost the same as the usual menstruation and there are no other abnormal symptoms in the woman’s body, then it is considered to be due to the hormonal effects of taking emergency contraceptive pills, which leads to early menstruation. 3. Other gynecological diseases: Bleeding after 10 days of taking emergency contraceptive pills, accompanied by abdominal pain and other abnormal symptoms, may have nothing to do with taking emergency contraceptive pills, and women with other gynecological diseases, such as cervicitis, gynecological inflammation caused by bleeding. Therefore, bleeding 10 days after taking emergency contraceptive pills should be taken seriously, and it is recommended to go to the obstetrics and gynecology department of the hospital in time to complete routine blood tests and ultrasound examinations under the guidance of a professional doctor, to clarify the specific causes of bleeding, and to start the right treatment to ensure that the condition can be effectively controlled.