I'm 14 y/o. I noticed it yesterday while masturbating, I felt a bump about 1 inch long, and as thin as a piece of cardstock, running from the end of the circumcised bit (I don't know what it's called) down towards my testes. I didn't think much of it but after a few seconds it started hurting. I looked at it and it was red. It's been there the whole of today but not red. It's very strange. I looked at some other forums online and people seem to be talking about something different, a thick long bump. Which is not what this is. It's thin and pokes out a bit. And it hurts, which is what concerns me. What should I do?