My husband is driving me insane.

My stepdaughter is three and we just got her for a week straight overnight. He puts her to sleep in our bed, which isn't big enough for all three of us considering I'm 32 weeks pregnant. She wakes up and if he's not beside her she cries. He put an air mattress in the floor to sleep on and she would cry and wake up and have to go lay down there with him. But he's too dumb to just sleep down there with her. He picks her up and puts her in bed with me. Then when she wakes up again it's a huge fit and he'll have to come get in bed with us. He won't just sleep with her on the air mattress. He refuses to get her a toddler bed because he wants to sleep with her. So I ended up being forced to sleep in the floor on the air mattress at 32 weeks pregnant because she won't sleep without him. Which is so hard on me. I can't even get up. But there's only one other bedroom which is the nursery that they can share, but we don't have another big bed. Our bed is our bed and I'm being forced to sleep in the floor on an air mattress because he won't just sleep with her or get her a toddler bed. Am I overreacting? Advice, please.