The success rate of a medical abortion
depends on the period of pregnancy
at which it is done. While a 100% success can be noted before 6 weeks, it is 85-90% at 9-10 weeks. It should always be confirmed by an ultrasound
. Menstrual period generally returns 4-6 weeks after Misoprostol
intake. In the present state, I think you should follow your doctor's instructions and get a D&C performed as this would diagnose the cause of your bleeding. Headache and cramps may be due to intake of Misoprostol. Wish you good health.