Please Answer me

i have been a homosexual sometime but now i am no more. My interest has diverted in girls. I started musterbation from the age of 15 and sometimes I do that now. We are religiously and culturally bounded not to have sex before marriage or make any girl friend, same is the case for girls. i have some questions for which i need your help.
1. When my sex arouses and i opt to go for Musterbation i ejaculate very soon, mean within a minute? What to do with this problem?
2. When i Musterbate my testicles start paining?? why is that????
I am very much worried, Kindly if you help me??

Thank You,