Took a HPT it was -ve, took Beta HCG it was negative again around 45 dayys after my missed period.Then took meprate 2 times a day for 5days. Its been 1 week since I stopped meprate, still no sign of periods. It's been more than 60 days since my missed period, what could be the reason, could I be pregnant still? If yes, why earlier tests were negative?