So my girlfriend is down with covid (not very sick though) and I'm trying to isolate mysel

It's not a big deal at all brother. My wife has had the first cooties and after that the Delta Cooties variants and she only had the Cooties sniffles, loss of taste and smell. Cultist want to make you afraid of the Cooties. I wouldn't give it to much thought brother. Don't reject your girl over fears of Cooties.