Question!

My boyfriend and I did oral. And then we did anal. It was on December 22nd. He wore a condom during anal. I know you can get pregnant if you do anal, and the uhh, stuff drips down.. But as far as I know, the condom didn't break. When we did oral, I went first, he finished, we kissed a lot, and then he went. My period is due in 8 days. I have been very gassy this week. and my stomach has light cramps. I feel like it is kind of early for period symptoms, because they come a few days before it. I do get acne. And that's happening now. But I've never had gas this bad. And the cramps kind of feel like it's pulling. I've not been nauseous or anything. I always get worried and paranoid about this kind of stuff. I'm sorry if I sound like an idiot. But does anyone think I could be pregnant?