Help!!!

I’ve been feeling nauseated for 2 days now only at night though. I get cramps and I have the feeling as if I was about to bleed. I’m supposed to be due sometime this week. Last week me and my boyfriend got sexual. But we DIDNT have intercourse. (TMI) I swallowed his..sperm. And we make out naked. I’m kinda scared that I’m pregnant even though I KNOW I can’t get pregnant by swallowing sperm. I tapped my clitoris with the top of his penis....What if it managed to get into my vagina somehow? I really hope not. Any answers to this? Also I feel like throwing up. But I don’t manage it’s off and on at night.