It is impossible to leave a double bed other than on the side you climbed in. Rolling over to the other side or crawling out anywhere else is out of the question. If something is blocking your path (other people, pets, books), you have to stay in bed until they are gone, or you died from starvation. On or the other.
(I never buy my sims washing machines, if I can avoid it. I had a weird bug at some point, which caused clothes piles to appear, without a washing machine or a laundromat anywhere in sight. Couldn´t find out a solution at that point, so that family now have their machine. Perhaps reseting the lot with Nraas mc would have worked).