I TOOK 3 PREGNANCY TESTS AND THEY WERE POSITIVE

MY LAST PERIOD WAS AT THE END OF NOVEMBER OF 2006 AT THE END OF DECEMBER 2006 I WAS LATE SO I TOOK 2 DIFFRENT PREGNANCY TESTS TO BE SURE AND THEY BOTH WERE POSITIVE 5 DAYS AFTER I TOOK THE TEST(DECEMBER31) I STARTED BLEEDING FOR LIKE 3 DAYS BUT ONLY THE FIRST DAY WAS HEAVY AND THE NEXT DAY WAS ONLY AT NIGHT AND THE THIRD DAY ONLY IN THE MORNING, THEN THAT WAS IT. THAT WAS THE LAST TIME I BLED IVE STILL HAD INTERCOURSE SINCE THEN WITH MY BOYFRIEND BUT I HAVNT BLED SINCE THEN ALMOST 3 MONTHS? AND LAST MONTH I TOOK 3 PREGNANCY TESTS AND THEY WERE POSITIVE, BUT I HAD READ SOMEWHERE THAT I TAKES UP TO 15 WEEKS AFTER A MISCARRAGE FOR THE HORMONE TO GET OUT OF YOUR SYSTEM AND COULD GIVE A FALSE POSITIVE SO IM NOT SURE HELP ME PLEASE