Burning skin, irritated, uncomfortable.

Had unprotected sex with a woman in Prague back in December and I contracted possible epididymitis from her. Initially I was feeling pain in the testicles and thought for sure I contracted herpes from her. I took antibiotics and felt better after about a week. Just was tested for HIV and my test came up negative. A few weeks after the sex I felt this very strange feeling of some kind of burning sensation rising up my throat and settling in, I've never felt anything like it before. No lesions whatsoever anywhere on my body have appeared. It's been 3 months now. Anyway I keep feeling this really strange burning sensation on my face. Kind of behind my eyes and near my nose. It feels like I have a sunburn but I don't. My face feels tight and irritated. I feel fine in the morning and then it starts to burn in the afternoons and it's the worst in the evenings. I do have a small canker sore in my mouth that recently formed. The burning has happened every day recently. Its so uncomfortable!