What Does Positive UPT After Having Medical Abortion Indicate?

hi...i gave abortion pills to my wife after 5 days periods was stoped and then i check with the prega news it still showing positive result after that 1 gave another pill vaginally next day she have little bit bleeding in the morning and next gave i again check it again show positive result but its after some time not at a time of checking.pls tell me abortion is succesfull or not