I recently noticed a small light colored bump slightly smaller than the size of an eraserhead on the rim of my penis on the top side. its very pimple-like. I'm concerned as to what this is, it doesnt itch or hurt, and really doesnt cause any reaction when I touch it. theres no redness to it at all. it hasnt grown or anything in the past 2 days. I had Protected sex with someone about 3 weeks ago, but thats it, I really don't think its an STD/I but am still really worried about it. I plan on having a doctor look at it sometime soon just don't have the time so I'm posting here until then. picture is below, any ideas?
Thanks
http://s580.photobucket.com/albums/ss248/cass44310/?action=view¤t=photo8.jpg