How far along is she? Gestation is an average of 59 to 63 days though can be a little sooner (like 57) or later (70 and you should call your vet to discuss). Water breaks at the end of first stage. Is she in labor? Has your girls temp. Dropped yet? When the temperature drops that's first stage. The pups should arrive within 24 hours (usually sooner) of the temp. Drop or you need to call your vet. Did your x-rays or ultrasound show possible problems or was your vet concerned for some reason? It's a little hard to say without knowing a little more. :-) Here's some resources for you.
http://drnelsonsveterinaryblog.com/2009/01/01/canine-labor--when-to-call-the-vet.aspx?ref=rss
www.dogbreedinfo.com
www.learntobreed.com
www.diamondsintheruff.com
www.dogfoodanalysis.com
http://drnelsonsveterinaryblog.com/2009/01/01/canine-labor--when-to-call-the-vet.aspx?ref=rss
www.dogbreedinfo.com
www.learntobreed.com
www.diamondsintheruff.com
www.dogfoodanalysis.com