Yeah, you might have poly cystic ovarian syndrome, or PCOS. Chances are, if you took 6 home pregnancy tests and all were negative, you aren't pregnant.
This happened to my friend, but is is very rare.You could have an ovarian cysts or PCOS which will cause you to miss a period. This has happened to me al teh time, sometimes I go 75 days without a period and PCOS is the cause