Small bump on underside of penis please help?

Hi i'm a 17 years old, and a few days ago noticed a small bump on the underside of my penis on the shaft right underneat the head, somewhat to the right. At first I believed it to be a pimple or something of that sort, but it hasn't seemed to go down in size whatsoever. There is very small redness around the actuall bump, but nothing itches. When i squeeze or press on it with small amounts of force it hurts a little bit. the top of it is sort of shiny like. I've never had sex before so i don't believe it could be any STD, but was wondering if it could possibly be a cancer lump or something else? I haven't tried to pop it, but one suggestion on another similar case on this sight said to pinch it and insert a small sewing needle and drain it and clean it with peroxide. I'm just curious as to whether or not i should be woried about this or if it is something that will go away. Thanks so much for your help!