Pregnant rabbit is not moving? HELP!?

I have a pregnant rabbit bt I am not sure of the due date. She is defo pregnant as I have felt and seen the babies kicking. And have palpalted her. Since y.day she has been coming on my bed and lying around and rolling up in a ball and just sitting there for hours and very really eat and touch her food? She doesn't move around a lot and she isn't eating much? Bt wen its dark she is quite active? I'm quite worried and wondering why she doesn't move or eat much in the daytime and why she isn't using her cage? Help?