Dear Doctors, I have a small red lump in the middle of the shaft of my penis, towards the right..kinda. It's not painful, it doesn't have any liquid that I can see. I've been looking all over the web to find out what it is, I've had it for about a week, I just got over a cold and I don't know if it's even relevant to mention that. but I'm concerned I have an STD or something. It's semi hard, red and about the size of half a kernel of corn, I've had sex but that was more than two months ago, I don't know what to do.
Please respond to this...