 [ Symptoms ] a soresmall bump on penis  hi i have had no sex for 5 weeks but i have a red sore on my penis at first i thought it was a rash from my gym underwear rubbing against while my skin was damp but now after 2 days i see it is a proper bumpsore type tiny lump could you help identify what this could be from  thank you [ Disease ] hi if you shave could be just an ingrowing hair could be just a hair follicle playing up i do not think your find one pimple is an std or sti just let it come to a head and squeeze it out they are painful why there growing so just lay off masturbating till its gone good luck