Pregnancy body.

Prior to being pregnant I never felt physically undesirable to my husband. He actually would want to have sex a lot more than me. It was like this for years. 
Since I started showing .. 
He just says he isn't turned on by pregnant women. And says "wouldn't it be weird if it did turn me on"? I don't think so considering it's me. 
I thought it would help him feel closer to me. It just makes him barely do anything but kiss me and hold my hand. It is just hard, I used to always knowing that I could make my man want me. Now if I want to do stuff I have to like work him up and it honestly is awkward to me because I feel like he don't want anything because he is limb. He can always tell when I'm in the mood, so I know it's not like I just catch him off guard.. 
Anyways I'm 31 weeks now and it just makes me feel so lonely sometimes. Of course, I know everything isn't physical in a relationship.. but it just brings me down thinking he doesn't even look at me and desire my touch or anything.. 
He says it's just pregnancy and only temporary. It's hard for me to imagine him watching me give birth and not continue this streak.. following the birth of our daughter. 
I have worked pretty hard in this pregnancy to stay in shape/healthy and be conscious of how my body is changing. 
Regardless, I know I look good but I can't grasp why he doesn't desire me at all. Makes me just feel distant. And these hormones make me feel so emotion, so that doesn't help the situation.