m 20 and had protected sex with a prostitute and dumb enough I also gave her unprotected oral when I had 1 or 2 open sores in my mouth/
tongue from accidental biting. About half a day later, I noticed that the sides of my inner cheeks developed what seemed like an open sore (2 of them). It became painful when I touched it with my tongue.
Then about a few weeks later, the pain went away but the sore was still there, just being dormant.