It all depends on when you Oed - the most sensitive HPT's will only show results after at least 10 days after ovulation, and not really that reliable till about 12-14 days after ovulation. It could also be that you haven't ovulated at all - my first cycle off the pill went for 100 days, because I just didn't ovulate. Wait a while, then go for a BT - they are more reliable and the doc wil lthen be able to do something if you aren't ovulating. Have you thought about charting or using OPK's to pin down ovulation at all?