Starting a few weeks ago, I had these small red patches on the head of my penis. But those soon went away, but now I have this lump under the skin of the shaft of my penis. It sometimes itches, and if I take the soft yet patchy cover it lets out a clear liquid. It usually flattens back to the normal look, but if I touch it or mess with it, usually by masturbation it swells up larger and slowly goes back down some. I would appreciate any help I could get, and if a picture would help I could also do that. Thanks.