Not being able to have an orgasm for a man

hey im 17 years old and me and my girlfriend have just started having sex and every time we do i cant have an orgasm but she always does and it upsets her. If i jack off i can have one but i havent been able to have an orgasm while im having sex. i just would llike to know is there something i can do or something she can do to make me have and orgasm cause it is making both of us upset. thanks

As long as you have an orgasm, it does not matter how you have it. There are many ways to have a great sex life. Accept it the way it is and enjoy sex anyway. Try to find new and different variations. Are you using a condom? Condoms makes orgasm difficult for some men.