I just posted in another thread in this section. You are going through what I just did until last Friday when my Biewer finally whelped her litter. It was 3-4 days of wonder (and slight) worry. After the fact, I've decided that all that we see (or think we see) in those days before real labor starts are the silent & some what invisible ways the mom & pups are getting ready for birth. Of course, having decided that now...........no doubt the next litter I have, I will be waiting, wondering, (and slightly) worrying once again.
Good luck with your girl & her litter. Hope they come soon, all healthy & well!