Pregnant and gone off sex

So I'm 27 w + 2 days and i have completely gone off sex. My partner works away in the week so whenever he is home at weekends we used to be at it 2+ times a day. Now once a week if he is lucky and I dont even enjoy it. My sex drive has completely gone. I feel fat and uncomfortable and even kissing and biting my lip makes me feel icky. I have orgasmed once in 6 months and it used to be regular. My breasts constantly ache and they used to be my go to point to turn me on. I haven't told him and I dont really know why. Hoping this will eventually go away as I miss being so clise to him and actually enjoying it. Anyone else feel this?