I'm 16 and since I have been around 13 or so I have had these six bumps in the shape of a rectangle on the tip of my penis on side facing away from me, not on the head. They look like pimples and nothing hurts they're barely noticeable, but they have never gone away. I have no idea what it is and I'm too embarrassed to go to the doctor, can somebody help?

Don't be embarrassed to go to the doctor. It could be nothing, but what if its something really bad? Do you want to keep questioning it, or go through a little embarrassment that could possibly save your life? If you're writing it on here, then your obviously concerned. So go get it checked out.