Hi, I am a 29yr old male, about three months ago I noticed a small lump on the underside of my penis shaft under the skin , the lump is not moveable, it has a stinging or more like a pinching feeling to it often, please help me as it has me worried and what may I use to treat it, I honestly have thought of cutting it or pricking it with a pin to see if it is pus filled or if I can press it out.