So I had unprotected sex back in late November and we did the pull out method and what not and then a few days after I had period and I thought I was okay it ended in early December (I got it around nov 29th and ended around dec 3rd or 4th something like that) and I haven't had it since its barely been a month but I'm scared like could I be pregnant I usually get my period late in the month and was expecting it already but it hasn't come  I feel like I'm overreacting but I'm just not sure I did get sick around Christmas time but it wasn't like morning sickness at least I don't think. I just had headaches and bad stomachaches I also had the runs (sorry if tmi) but I think it was because of something I ate idk