Endometrial polyps may also be discharged with menstrual blood, for example, endometrial polyps are relatively small in size and less than 1cm in diameter. when the endometrium is shed during menstruation, they may be discharged along with the shedding of the endometrium. if the endometrial polyp is relatively large in size and larger than 1cm in diameter, the chances of discharging it with the menstruation is relatively small, and you can do pelvic ultrasound 3-7 days after the clean-up of the menstruation. If the endometrial polyp has disappeared, it means that it has been discharged and does not need to be treated, and regular pelvic ultrasound can be done for review. If the ultrasound is still there, you need to have a hysteroscopic surgery to remove the endometrial polyp with an electrosurgical ring in order to cure it completely.