I have been on the pill for a very long time (years) and have finally decided to go off it. It has been about 3 weeks and I have not had a period yet. The strange thing is, that when I was on the pill and if I missed even by a few hours... I got my period... now, nothing. What could be wrong with me? I also haven't had sex because I was told to wait until I have a regular period before trying to become pregnant :confused: