I have a tight forskin i can retract it half way but no over the gland when flaccid but can when erect can i have a normal sex life would it hurt me ?

Phimosis: It sounds like you may be suffering from phimosis, which is a condition found in uncircumcised men and boys in which the glans, or head, of the penis becomes trapped behind the foreskin. There is usually a tight ring in the foreskin that makes it difficult to retract the foreskin over the glans. This can get worse with time, and i suggest you see an urologist for an examination and treatment.