Dosage was it prescribed by a doctor?.  What was scan findings?.  Previous obstetric history,  is there a cesarean performed?. What is your hemoglobin level checked before medications.  Usual recommended dosage of misprostol is 200  mcg 2 tablets 6 hours apart vaginal or sublingual.  You are supposed to consult your gynecologist if bleeding heavy as early as possible.  Sometimes it can turn serious.