sir i'm having problem with sex. i

i'm masturbating since from the age of 8. now i'm 22. at that age some one fed that in my mind.

now a days if i masturbate my pennis is paining if sperms comes out of it & leaking sperms very early wihtin 5-6 seconds. even while passing urine. i think that is a nerve from wich sperms come out.

so what is problem with me & how to come out of it. how can i overcome early leakage??? please give solution its a matter of a life