I love you sex

I know odd title but please hear me out. I'm a 26 year old married mother of one and one on the way. I've been having sex for quite some time now. I have understood sedans what it was and how to have it since I was a child. I was raped when I was very very young. As I was too young to get the meaning of concentual sex of 2 adults, I associated sex with saying I love you. Or showing love to the opposite gender. My husband knows all about not only what happened but how I feel about sex. To be quite honest I'm a bit of a nymphomaniac. My husband on the other hand feels sex is just an activity to do when you feel like it. Sex means nothing to him, it's just sex. Over the years with him I've had to go lengthy periods of time without sex because he wasn't up to it. Yet when he is, at times it feels like I am obligated to have sex with him. No is no for him but not for me. This isn't actually the case, I'm just always willing to have sex, I could have it every day, and he could maybe once a month on a bad month, so I always get no and he always gets yes. Anyway, I've explained the whole, having sex is like saying I love you, and not just me saying it but him saying or showing it as well, and when we don't make love I feel incredibly lonely, and unloved, and incredibly vulnerable. As I'm currently pregnant and horny all the time these days, he's drawn even more distant and we haven't done anything in weeks!! I know he loves me and try as I might, I can't get passed needing sex to make me feel connected to him. I'm hormonal and pregnant, and I need him to show me he loves me in this way but he won't touch me. I know none of this is normal, but I also know he understands how I am. What do I do?!? Masturbation is utterally disgusting, and in the past has left me even more sexually deprived.