It is a bout 3 years now since i had these symptoms : itchy skin, very tiny and difficult-to-see, pimple-like rash on chest, tommy and body. I noticed this after a month of sexual intercourse with lady. I later saw similar symptoms in my girlfriend after having sex with her. The symptoms become more pronounced in my partner anytime after sex. I don't feel any urethra itch or pus or pain. Nothing at all happens at my sexual parts or that of my partners. I took some antibiotics orally in the past but didn't help. After 3 years, i intend to go for Rocephin injection. Should I? Do we have STI's that can last that long without any signs at sexual organs? I'm very worried. I intermittently get sore in mouth and headaches too. What tests should i take? Any advice?