thank you for using healthcare magic,
you went under abortion
by pills. some times by pills there are chances that abortion doesnt take place completely.. you sholud go under D&C ..
test is positive because of remaining fetus part and it takes time to become negative even after complete removal of fetus.. follow up with your gynecologist..
in future use birth control methods like oral contraceptive
pill or condom and if you already have one child IUD will be good option..