I'm 18 and I believe I have too much foreskin. When I'm flaccid there's about 3 1/2 inches of foreskin covering my penis. When I'm erect my penis is completely covered by foreskin, however, there's still an opening so I can pee normally but towards the tip there's about a half of inch of foreskin on the side of the tip. I haven't had sex yet and there's no pain at all, I also have a few little white bumps under the glands. Are any of those two things, things that I should be worried and concerned about?