I am a 16 year old male and over the last couple months i had noticed a pea sized white lump on the back of my left scrotum. Thinking it was just a tuff pimple or a cyst i decided to pop it. I poked a hole in the top of it but only a little blood came out. Over the few next days the lump turned into an even larger lump that is more of a tube and looks to be a enlarged vein sort of. Its about half an inch long and is located on the back left of my scrotum. It is not discolored and I experience no pain from it and it hasnt changed size the last two days. Does anybody know what this is because i'm starting to get scared that it could be something bad. PLEASE POST UR OPINION AND HELP!!!