Hello! 10 months ago a girl from my faculty made me unprotected oral sex. Some pimples appeared on my chest and arms. I did the general analysis after 6 months and hepathitis, hiv, tpha and there were negative. VDLR was sometimes positive.
A few months ago I saw that the head of my penis was weird, it had a shiny texture like fish or snakes.
Now this strations/lines appeared on my penis:
https://imgur.com/a/6D6uBzM
This is not painful, itching and i dont have any secretions.
Since 10 months ago i didnt have any sexual relathionship.
What this could be? What analysis or treatment should i try to do?