usually the process of abortion
will complete in 36 to 48 hours after completing the dosage of pills, after that for 1 to 2 weeks you can see mild bleeding to minimal spotting,
but if you had continuous heavy bleeding better to undergo ultrasound
once to detect the possibility of any retained products, as in some cases even after D&C some bits may remain if the procedure is not done completely,
so you consult your doctor once and go for ultrasound which will clarify the doubt.