I am 14 and About a 3-4 days ago, I noticed there was a bump on my penis.It is on the lower part of the shaft.It looks like a pimple to me, but what I'm scared of is it being a wart.Thanks for the help.

Pimples and bumps of every kind appear all over the body in places that are moist and closed in by clothing, in both men and women. Some stay a few days or weeks, some stay for years or forever, 99.9% are harmless. Warts are brown and not pimply at all. They can be treated too, with over the counter ointment. Some warts that appear in the crotch are a different virus and a doctor can treat those, if they grow and become worrisome. But in general, unless you are sexually active, don't worry about it, and show it to a doctor if it bothers you.