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Hey I'm 21 years old, and I never had a problem with my penis as far as I know, but there is this one little thing that I thought I should ask in case someone else has the same thing.

MY penis has that vein on it that obviously brings the blood into the penis to make it erect. This is kind of hard to explain but.. it starts from the base of the penis barely visible, and then just before it gets to the head of my penis (now visible and sticking out) it gets curled up a little like a question mark and disappears back into the penis. So its actually coming out of my penis. I'm making it more dramatic than it really is but I use to fear that having sex would damage this vein. OR putting or taking of a condom would hurt, which it really hasn't given me and problems. And sex doesn't hurt one bit.. but can you all tell me if you have this same thing because I haven't seen enough penises in my time to know. Also I went to a urologist once and he didn't say anything about it so I always assumed I was pretty normal. Thanks