Time to set up a box and put loads of newspapers in it. Spread each out and make the bottom of the box 10 - 12 sheets thick at least. LOTS of newspapers.
You can take her in and have her x-rayed at this point and see how many you are likely to have.
I would get on amazon.com and get a book on whelping and raising a litter and have it overnighted to your home. Read it. It will tell you about the possible problems during whelping, what to expect, and when to call in your vet if necessary.
Your bitch will likely do what she needs to do with the puppies. Sometimes it is best to tear the umbilcal cord yourself, if it isn't stressing her out. I usually let her work on the puppy, cleaning it etc, so long as it is moving. She will make it squeak, and it will look for the teets. If it isn't breathing or she doesn't clean the sack off, then you need to do this.
So long as it is ok, I leave it until she is working on the next one. Then I will dry the first one and put some rick rack on it, and weigh it, record sex, weight, color of rick rack and give her back to the mother and do the same for the second pup.
It can be a long night. Sometimes they have 2-4 puppies. Sometimes 6-8, sometimes 10-14. This is why an x-ray can be helpful. If she shuts down after 5 puppies and doesn't have anymore, she may be done. Or, she may have dystocia, and if so, the remaining pups as well as the bitch are in trouble. If she is tired and stopped for more than 2-3 hours, but you know there are more puppies in there, then sometimes giving Carnation condensed milk or white ice cream can actually stimulate the process and start her going again.
Before she starts to whelp, she will become restless, tear around in the box, and pant heavily. Her temperature will steadily go down through the course of a week until it reaches about 99 degrees and then it will dip to about 98 and stay there for about 12 hours or so. Then it will come up over 100 before she whelps. If you record her temperature twice a day, from this point on, you should see the 98 dip. Usually once that happens, pups will come within 24 hours.
If you got the bitch from a breeder, maybe your best bet is to call the breeder and see if she will whelp the litter for you. The bitch should feel comfortable there, and she will be able to come back to you 6-8 weeks after the litter is whelped.
It is an awful lot of work for someone who had no idea, and now it is happening within a week.
Good luck. Ask LOTS of questions. We will try to help.
Heidi Ho, Odie
Joy-Joy, Bear Cub, Hepsi-Pepsi
Cujo2, Karma Chameleon
Ramona the Pest, Kojak -- who loves you baby?
Tiny Tinnie, Susie's Uzzi, Kaiah -- The Baby Monster.