Possible gential STD?

Over the past week i have had symptoms of major itchiness from my testicles and an itchy dark patch that’s appeared near my groin.
More concerningly, a single bump has also appeared on the shaft of my penis that has me thinking i might possibly have an STD. it doesn’t hurt to touch the bump and i haven’t had any problems urinating or any discharge, the bump on my shaft is smooth with a ring of dead skin around it like ring worm. I had sex with an ex girlfriend over a month ago with a condom. I am getting tested today.

keep us updated, but this does look like an STD, from my own personal experience but i could always be wrong