During a medical abortion, if the gestational sac is too large or the dose of medication used is not enough, the sac may get stuck in the uterus or vagina and not come out. Medication abortion, also known as medication abortion, refers to the oral termination of early pregnancy with mifepristone tablets plus misoprostol drug. The former causes degeneration and necrosis of the uterine lining and softening of the cervix, while the latter causes uterine excitation and uterine contractions, prompting the expulsion of the embryo. In the case of medical abortion, if the dose of medication used is insufficient, it may lead to insufficient contraction of the uterus, resulting in the pregnancy sac being stuck in the uterus and unable to be expelled through effective uterine contractions, in which case additional supplementation of uterine contractions, etc., is needed to help it be expelled. If the gestational sac is large and the vaginal opening is small, it may also be stuck in the uterus or vagina and cannot be discharged. It is recommended that once the pregnancy sac is found to be stuck in the uterus or vagina and cannot be discharged, the patient should consult a doctor in time and have it removed by a professional doctor after completing the relevant examinations.