Hi, I have some hard white stuff on the skin of the fernemulm, not on the penis head itself, but on the skin around it, when I take a shower, and pull back the foreskin to wash it, I get a sharp pain for about 1-2 seconds, but there is no pain after that one pull, is there any way to keep the place clean, so I can pull back my foreskin without pain? Do I keep washing?