[fluffymunchkins]

Once they are noticably pregnant they will usually give birth within the next 2-3 days. So she is definitley at the end of the gestation period.
If she has been noticable for this long or longer I would be concerned that she is having difficulty giving birth and needs help from a vet.
If she hasn't been noticable that long then I would leave her in the quiet so she can give birth in the calmest environment possible.

I hope everythings ok for her x