Bump on penis

Patient: Okay so I’m not trying to make a joke or be vulgar, but I know my manly part very well, I know for a fact this wasn’t there the day before, but I woke up yesterday and there was this single bump on the shaft, it is hard to see, it looks like a flesh colored bump, and it’s only the one bump, it feels kind of like a little pebble under the skin, and it just came out of nowhere. I (unfortunately) haven’t been with a girl since 2007 so what can this be? I’m not going to deny that I’ve been with some questionable girls in my life, but that was forever ago. Help!

Symptoms: none

Doctor: