In early pregnancy, a woman has a gestational sac in the uterine cavity, as well as the peritoneal and basal membranes that encase the tissue around the gestational sac, all of which are meconium. However, in some cases, a small amount of meconium may remain due to contraction of the uterus, and abdominal pain may occur. When abortion is performed with medication, the meconium will absorb or expel the pregnancy capsule on its own. In the case of ectopic pregnancy, when all the ectopic lesions are removed, there will be a small amount of meconium in the uterine cavity, which will gradually be expelled on its own. However, in either case, there will be residual meconium in the uterine cavity, which will cause irregular bleeding in the vagina, and if the bleeding is excessive, the patient will need to undergo a timely removal procedure.