Red and grayish mark on my glans after hard masturbation?

Hello eveyone let me tell you about my problem I hope that someone can help. it was sort of a bright redish and pretty small i'd say less than a quarter of the size of a pencil eraser. It has since then become about half the size of a pencil eraser or a little larger and more oval than round, is slightly raised ( not much at all maybe it's just my eyes) and gone to more of a purple color and somewhat "shiney" but you can still tell there is red there if that makes sense to anyone and it doesn't seem to be getting better or larger. That’s all because of lotion i put as lube when i masturbate. I don't have any discharge blood or other odd things coming out of my and the spot doesn't have any dicernable head or anything to suggest there would be somethig like that. Last night after my shower I dried myself and when drying my in just grabbed with the towel as to not cause undue friction and i noticed some skin covering the spot was peeling off so I peeled it off; it looks no different now. I have a few concerns I don't think that it hurts or itches but the thing is that I have never had a whole lot of feeling on the top of my so that I dont know if it doesn't hurt or itch. I've read a million things on the internet form to cancer but I can't really find anything specific about my problem and I'm freaked out. Please give me your thoughts if I go to the dr should i go to a urologist, gp, derm or GUM clinic? I dunno what to do I've worried about it for a 3 solid weeks and I'm tired of worrying. Is there something over the counter I should try before I go?