Weird problem lol

Ok this one is super TMI so I’m sorry lol and it’s totally out there...

My husband and I are TTC. We had unprotected sex for the first time two days ok and one time today. Immediately after I started feeling weird and having stomach issues. Now I have crazy diarrhea. Has that ever happened to anyone after their man has cum inside you? Can you have a weird reaction to sperm? LOL