Hi all. I'am 20 years old male and I have a problem with my foreskin. I can easily retract foreskin whet it flaccid and wash under skin. Also I can easily retract foreskin when my penis is semi-erected. When I have erection I also can retract foreskin, but with some force. When I have erection, I can retract foreskin only to under the head(glans). When it fully-erected I feel pain under the head, like foreskin is too tight. I tried to stretch foreskin ( about ~1.5 months ), I can see some improvement, but it still tight and it painful under head when I fully-erected. Maybe somebody had same problem? What I can do? It worth to continue stretching?