What causes fever, sore throat, and diarrhea after unprotected sex with unknown women?

Hello doctor,

I am unsure if I entered the woman I had unprotected intercourse with for one minute. After one month of that encounter, I got a fever, mouth sores, cold, and diarrhea that resolved within a few hours without any medications. I did my HIV tests after one month of that encounter, and the tests were negative. After a while, I again got a fever and cold that got well within a few days with medication at home after four months of that encounter. Six months after that encounter, I got pimples on my face, shoulders, and neck that got well within a few days without medication. I also got acne on my cheeks and a mouth infection due to a yeast infection that resolved within two days without medicine. So, after six months and three weeks, I repeated the HIV test and tested for syphilis and gonorrhea. All the tests were negative. I have small pimple-like colonies in my mouth, and I have had one nostril blocked all the time in the past. I also get mucus when I sit in a cold room for a long time, and sometimes feel back pain. Should I test again? My previous HIV test results are negative. Four months before my second HIV test, I had sex once after my last encounter, and it was with protection. Please help.

Thank you.