
Hi Guest,
without seeing the bitch, it's really difficult to know.
It sounds to me like she could be having pups, but then phantom/false pregnancies can seem very real.
All I can say, is keep an eye on her. If she starts panting, give your vet a call, and let them know what's happening. If she is having pups, it's best to have a vet on hand.
Best of luck,
Lisa