I have been on Femcon for just about 1 year and have had relative...

I have been on Femcon for just about 1 year and have had relatively few symptoms throughout this time. I occasionally get severe headaches and mild nausea but the last 2 months, I have not gotten my period when i was supposed to and i am concerned. My last active pill falls on a Sunday and I normally get my period the following Wednesday (2-3 days later). Last month I did not get my period at all. I took 3 home pregnancy tests because, naturally, I freaked out thinking that I was pregnant, and I went to see my gyn who also confirmed that I was not pregnant. I started a new pack of pills on time hoping that I would get my period this month and that last month was just a fluke but alas... still no period! I plan on taking another pregnancy test later today to confirm that I am not pregnant because not only am i very diligent about taking my pill on time each day, but my boyfriend and I religiously use condoms as a backup, despite my being on the pill. Has anyone else had an experience similar to this??