I'm 15 and I noticed it a few nights ago. Ive never had sex. Its formed right over a red, vein like line at the left hand side of my penis. Its at the top. Its white, but has no head at all. I tried to "pop" it but it hurt a lot. I'm quite worried, but I want to hear some thoughts on what it could be, whether it will go away soon or if I should go to a doctor. If you do know PLEASE tell me!