HiI am a 19 year old and have a girlfriend.She does not have any STD's or anything. I have been the only person she has been with.I have this small bump on the shaft of my penis near the middle on the left side.I do not know how long it has been there. All i know is that it has not gone away for awhile.The bump is under the skin it appears. It is "soft"... I can poke it and press down on it. I can kind of move it around in the same spot. It kind of looks and feels like a vein.The bump is pretty small.I was thinking it was a cyst of some kind.It does not hurt at all.There is no markings ontop of the bump, which is UNDER the skin, such as white, black dots or anything... there is none of that.It is just a soft bump under the skin on my mid left part of the shaft, that feels like a circular vein....Anyone have any ideas?