I just Googled the gestation period for dogs and it's 63 days, so yes, she could be going into labor. If you cannot reach a veterinarian, stay with her and comfort her. Don't let her feel alone. That's about all you can do for her. Congratulations!
9weeks She will nest before birth and get white milk as opposed to clear colostrum the last day or so before birth. They also usually stop eating the last day or two before labor. Labor takes about 18-24 hours from first to last puppy, sometimes more or less. As long as she doesn't actively push for more than 90 minutes to produce a puppy, she is doing fine. Puppies can take several hours between them, but active pushing shouldn't go on for more than an hour and a half or so at a time.
Please worm her before she gives birth. Puppies can die of hook worms quickly. You will need a pyrantel based product to kill them.