No feeling anymore

My boyfriend and I have sex weekly and I always seem to want it. He loves being on top which I don't like. It just seems awkward. He stares at me and I keep my eyes shut. Then he gets off and I don't! I'm just laying there!! I've tried being on top but that's not even working anymore to get me going... what should I do?? I feel like I'm never going to have an orgasm with him again!