OPINIONS NEEDED

I have been on birth control for over two years now and have stopped taking it in October. I got my period in November and December but haven't gotten it in January. I read that your period takes a while to get back to normal after getting off the pill. My husband and I always use a condom and even with one on he pulls out and cums in the condom. Should I be worried about being pregnant or is my period just off a schedule? I just want to know what your thoughts are on this. Thank you!