Could I be pregnant?

I was on the pill for three months but came off of it at the end of October. I had my regulated period. I was scheduled to have my next one the 6th of December but have yet to show any signs of it starting. I haven't showed any signs of being pregnant either and it does say that after stopping it could take 2-3 months before your period was regulated. From anyone who's been on then off the pill did you ever miss a period? Could I be pregnant?