Welcome to the STD forum.
No STD is known to cause such symptoms, and the standard STD tests are highly reliable -- so you can be sure you don't have them. But that's as far as we can go on this forum; we don't attempt to address genital symptoms other than STDs. You might get useful advice on the urology forum -- but most likely the main advice there would be for you to seek professional advice from urologist.
Good luck with it-- HHH, MD