What Causes Positive HPT Post Abortion?

MT PILL WAS TAKE BY MY WIFE. DUE TO POSITIVE PREG COUNT TEST. VERY LOW PERIODS WERE THERE AFTER 36 HOURS WITH SOME CLOTS AND STOPPED FOR THREE DAYS. AGAIN AFTER 3-4 DAYS PERIOD STARTED FOR ABOUT 6 DAYS. THE PERIODS FOR THE SECOND TIME STARTED ON 23RD OF FEB. NOW ON 10TH OF MARCH THE PREGCOUNT TEST IS POSITIVE. PLEASE SUGGEST WHAT SHOULD BE DONE