Could I be Pregnant?

So my boyfriend and I have been having sex without a condom for a while and he's been pulling out so I haven't been getting worried until I looked at eve. and I haven't started my period when I was supposed to, I missed my period for 3 days now. I would have these little cramps for about 2 minutes and then it'll go away, I'm either hungry or too full, and my nipples are in so much pain but my boobs aren't and that's how I sometimes calculate when my period is about to come on. We had sex almost 2 weeks ago without a condom and it'll make 2 weeks this Thursday I mean we've had sex more times after that day but I still haven't put any thought into it about me being pregnant. Do you guys think I'm pregnant?