Apparently GI upset after swallowing cum is a thing?

canadiangrl💋 • 24❤️ young nurse 👩‍⚕️ 8/23/18 🔒💑

So I swallowed for the first time early Tuesday morning. Felt blech afterwards and had diarrhea 24 hours later, along with terrible heartburn. I hooked up with my fwb again this morning and I felt fine until I left his house and felt nauseated on the way home. I now feel better after eating and laying down. I started looking it up online and apparently GI upset after swallowing is common? What’s your thoughts??