Desperate for the d

I have an 18 month old, and my sex life has become nonexistent... literally in the last year and a half my man and I may have only done it 5x. I feel sad like I'm not desirable and he doesn't want to bang me. So I take care of it myself. But I really just want to feel him inside of me. I can't help but feel like I repulse him. Does anyone have any suggestions?