Hi, I understand your concern. - The complete expulsion of fetal parts from uterus is followed by significant decrease in uterine contractions & bleeding. The size of uterus gets smaller & hard to feel.In such cases of spontaneous abortion/ medical abortion,USG scan is taken to confirm complete abortion. - USG scan - if shows remaining/ adhernt parts of fetus in uterus,- which is not cleared with medicines, one should be subjected to D&C. - Actually endometrial thickening is not a criteria to predict need for D&C operation. Misoprostol has action to expel separated uterine contents out by contracting uterus.Similarly Injection oxytocin also stimulates uterine contractions. Usually either of drugs suffices to remove unexpelled products./ IV fluids with oxytocin drip helps to do the task. Please check with your doctor about dosage of the drugs The doctor of course is a better judge as he has examined you physically. Thanks.