I don't really know that much about pregnant cats. I worked at a vet clinic for about a year and a half and we never had any cats giving birth. (hmm...I don't really know why, actually, maybe they're just good at it! )

It sounds, to me, like she's just getting used to her surroundings and like a pregnany human, probably is experiencing some wierd physical and emotional things right now.

I would just keep an eye on her and if she seems distressed, call your vet.