There is also lower abdominal pain on the fourth day after a medication abortion because the uterus is contracting to expel the blood and uterine meconium that has accumulated in the uterus. Medication abortion is a way to terminate pregnancy in early pregnancy and is suitable to be applied within 49 days of pregnancy. Medication abortion is done by taking Mifepristone tablets at home itself for the first few days and on the fourth day you need to go to the hospital for observation of oral Misoprostol tablets. Misoprostol tablets are followed by contractions and dilatation of the uterine opening, followed by expulsion of the gestational sac. After the expulsion of the gestational sac, the uterine cavity will still have blood and meconium that need to be expelled slowly, and this expulsion time is relatively long, about 2-3 weeks. Therefore, on the fourth day after the abortion, there will still be contractions, because there is still a need to expel the blood and membranes in the uterus. Generally, the doctor will prescribe some antibiotics to prevent infection, and also prescribe drugs to promote uterine contraction and discharge of blood in the uterus, such as New Biochemistry Pellets or Hematopoietic Pills, etc. You must take them as prescribed. You must take them according to the doctor’s instructions. About two weeks after the medical abortion, you need to go to the hospital for a follow-up examination to find out whether there is any residue in the uterine cavity.