As I said in the title, I've discovered a single red bump underneath my penis at the base of the shaft.  It just formed there two days ago and I'm a little worried.  I had unprotected sex once about five months ago I think, and haven't had a bump like this yet.  I have, however had some cloudy urine and a little difficulty finishing a few (maybe three) times before but I didn't think much of it.  I googled it and decided it was probably a UTI but now I'm not sure.  Today the red bump has gotten a little bit smaller, but the texture of the skin on the bump looks a little "raw" now in a way.  Maybe I'm making it up, I don't know.

Can anyone give me advice?  I'm going to get an STD screening as soon as I can but I have some transportation issues right now.

 

Thanks