After having an abortion, it is possible to experience stomach pain. Mild stomach pain is mainly due to pelvic congestion and uterine contractions. However, if the symptoms of stomach pain and falling are particularly severe on the 3rd day after the abortion, it is also important to consider that it may be due to poor uterine contractions. If there is any infection in the uterine cavity or any residue inside the uterine cavity, it can also lead to particularly obvious symptoms of abdominal pain. It is advisable to repeat the ultrasound to see if the uterus is recovering normally. It is necessary to use drugs to promote uterine contraction, prevent infection, and make sure to rest well. For patients who are determined to have residuals, it is necessary to consider purging the uterus if necessary, and at the same time, make sure to pay attention to hygiene.