Hello, My Foreskin is tight and it does not roll back properly when the penis is fully erect. I can roll it back when the penis is in unexcited state.But if i roll back when the penis is unexcited and try to excite the penis to increase it size...i feel little pain...i can not make out where the pain is coming from..I tried masterbating in such situation so that my penis get adjusted to rolled back skin during full erection.But it still is the same. Kindly advise