Im 15 years old and i have like a weird vein on my penis, its not blue it looks like a vein covered in skin. it doesnt hurt when i touch it, but it hurts randomly, but that can be my head just messing with me, im a very nervous, anxious stressed person and i think about it alot. It is located on the left-ish side of my penis going all the way to my penis tip.
For the record i do masturbate.