My boyfriend and I were fooling around and we did not have intercourse

I have been stressing alot about this. My boyfriend and I were fooling around and we did not have intercourse. I had my pants on. He ejaculated on himself and I got a little bit of semen on my belly. Can I get pregnant this way? I've been so paranoid lately. Been having panic attacks every now and then. I don't know if it's just my head playing tricks on me but lately I've been feeling nauseous and there are some veins on my breasts . (I'm not sure about the veins cause they might've been there all along and I never noticed ) I have a very long cycle of 48 days. I'm due in the next two weeks or so.