I don't think my partner wants to be with me anymore

I'm 7 months pregnant with our first child. I love him and he says he loves me also but there's no affection anymore. No hugs or kisses or display of affection. He doesn't do things he used to. He doesn't want to have sex anymore unless I make the first move. I ask him if he feels differently and I he says I'm being stupid.  He ignores me a lot and tells me I'm making something of nothing. I know I'm not just being over sensitive. He is just not the same anymore in any way and it's really making my moods low constantly.