Tryin to get pregnant after comin off the pill with no period...?

so i quit my bc pills in dec 08 and did not have a period afterwards at all... in may 09 i went to planned parenthood and she gave me provera pills to induce a period ( so hopefully theyd start back up and be on track) well i had a period from teh pills may 28-june 2. we bd on the 9, 11, 12, 13, 15, pretty much every other day lol... but have had neg. test and no period. Has anyone had something like this happen or stopped the pill and gotten pregnant with no period?