Sick?? from giving my bfriend head?

On Monday I gave my bfriend head, he came in my mouth and I swallowed his semen. Today, a day later my stomach has been off. This is kind of gross, I'm sorry ? , I've been really gassy, and I had yucky diarrhea, that had like stringy mucus in it. I didn't eat anything out of the ordinary, except for my bfriend's cum. I know that he is D&D free. Do you think that it's possible that my stomach is not right because I swallowed his sperm. Can cum swallowed get you sick to your stomach? Please don't laugh, or think that it's gross. I'm really not feeling well. Do you think it's his semen? I don't know what to do?