I have no sex drive and my husband is super frustrated

So in the beginning of our pregnancy our sex life was normal, and then I was put on pelvic rest for almost 3 months. Since being off pelvic rest we have absolutely no sexual chemistry. We've tried a few times and it's awkward and to be completely honest I'm just not that into it. Is it normal to lose your labido? He is getting incredibly frustrated which makes it hard for me to want be intimate with him at all. Let's get real, I'm 26 weeks pregnant and feel like a whale. I haven't felt sexy in months and as much as I love my husband i can hardly stand to be in the same room as him right now.