Orgasm problems.

My boyfriend and I have been sexually active for 8 months. We have sex often, but I don't think I've ever had an orgasm! Is my bagina broken or something!? I sometimes have to fake it because I feel so bad. I love him so so much, and I love being with him. I've done so much research and we've tried so many positions that are supposed to help, but nothing happens. Do any of you gals have any advice or suggestions so I can finally reach climax? I feel so bad about myself and it's just so frustrating