The best site i've found on the internet and i'm sure others will agree is
debbie Jensens whelping guide Do a search on that and it will pull her site up.
Your vet may have told you but you should start taking her temp twice a day. When it drops between 98 and 99 she should whelp her pups within 24 hours..so if it does plan on a long night.
oh I almost forgot..welcome to yt and congrads on the upcoming puppies..