so i had unprotected sex around 6 months ago and had no symthoms of anything until about 2 months ago when i started to get an itch on the shaft of my penis i thought nothing of it but it still hasnt gone away , tiny red bumps appeared but theyre so small and hidden behind pubic hairs , note that i also work with chemicals such as freon and im wondering if maybe its a chemical reaction or some sort of std ?