I found a lump

[Scott]

You tell a parent that you're worried about a lump on your testicle and would like to have a doctor check it.

[Mope]

Im 15. I found a lump last year on my left testicle. It is still there. It hurts when I apply pressure to it as if I were apply pressure to the testicle itself.

Im scarred. What do I do?