hey, I ve been using Qlaira birth control since september and everything was fine (regular periods) while I was sexually active. since 2 month my partner is gone abroad, but I continued using BC and period didn t come for two month now. had preg test after the first missed period - negative. no nausea , no dizziness. but also less appetite. never missed a pill, always within a few hours of usual time. I am 20. any helpful thoughts on this ? thanks in advance.