Hi, i am 17 years old and uncircumcised. I have begun to worry due to the fact that i cannot seem to pull the foreskin back very far. It seems to be connected quite far up. I have seen a series of pictures on 5 parts in which it should be pulled back, i can only get to the 2nd part. The pictures are on 'foreskin.org' and it is "The Three Zones of Penile Skin" part. Also the part which is connecting the skin to the penis. While masturbating, it also has a slight sting on it.

I do not know what the problem is, can someone give me an answer?