I m 16, and I ve noticed that I m having problems pulling my foreskin back as it seems to be sticking to the glans, so that it won t slide back easily. It seems like I also have mild phimosis. When erect, I can move the foreskin back to reveal the first 1/5 - 1/4 of the head, but I cannot expose the frenlum because for some reason the foreskin won t go past the top bit of the foreskin.