@Brimain,
Oh god. Please don't say your 15 and you really asked if you could get pregnant if you didn't have an orgasm. This makes me really afraid for the future of this generation when you don't even understand the basics of sex. And it's not your fault, I'm not calling you stupid. It just makes me mad that no one has taught you differently yet.
YES you can get pregnant with or without an orgasm. GO BUY SOME CONDOMS. Unprotected sex causes babies and stds. The fact that you are not pregnant yet is a true blessing.
Please please please for your own sake, go to your nearest Planned Parenthood and either get on birth control or get some condoms. It's free.