Pregnant and husband doesn't want sex anymore??

I'm 36 weeks pregnant and let me tell you I ALWAYS want it... lately he doesnt? which is odd because he used to be all over me.... it makes me feel so bad about myself. is it because I'm to big for him? I'm not sexy anymore? idk😕 after the baby is here we won't be able to for a long time.. I'm deprived. I need it. idk what to do.