Im 15 and just today I was in the shower washung myself up and when I was washing my penis I felt a small hardened bump in my penis. Like under the skin it felt like a really really really really tiny rock. I know its not kidney stones,but I have no idea what it is. Im kind of scared it might be a tumor growing. HELP

So you talk to your dad and perhaps see a doctor.

Even to mention kidney stones shows perhaps a very large lack of knowledge, (that is not where your kidneys is at)