Why is he only off one day? And he works over 40 hours?
I'm in a similar situation with my fiance and he takes the car for work as well. In my spare time I either talk to my friends and family, clean up, rearrange things, go for a walk, or in my case; do homework since I'm finishing up my bachelor's degree. Reading is cool too and I also volunteer every now and again. Rides from people you know or any transportation service works wonders!
I wish, but if he misses work he will get introuble. He can't miss but I will try my best to talk to him about it :(
You two need a weekend away before the baby comes. Talk to him about it. No work, no phones, no internet. Just the two of you. Why not give it a try?