How many pups were on your prenatal visual? If she doesn't have a bunch of pups it won't take as long as more pups. More information for you in the links below. Don't forget your post whelp in 24 hours if things seem to go okay for your Dam. Pups go in day 2 to 5 usually for initial check up, dew claw removal and tail docking (can't dock tails later) and you can set that up with your vet during your post whelp. Third link is also your breed parent club for you. Good Luck.
http://drnelsonsveterinaryblog.com/2009/01/01/canine-labor--when-to-call-the-vet.aspx
q3525724.html#a2810229 http://www.therealjackrussell.com/index.php
http://members.tripod.com/antique_fcr/goodbreeder.html
http://www.wildheirlabradorrescue.org/readingroom/what-is-a-back-yard-breeder.php
http://www.petfinder.com/index.html
http://drnelsonsveterinaryblog.com/2009/01/01/canine-labor--when-to-call-the-vet.aspx
q3525724.html#a2810229 http://www.therealjackrussell.com/index.php
http://members.tripod.com/antique_fcr/goodbreeder.html
http://www.wildheirlabradorrescue.org/readingroom/what-is-a-back-yard-breeder.php
http://www.petfinder.com/index.html