What day is your girl at? Are you talking she's close to term, or her temp has dropped?
It is prudent to get an ultrasound or x-ray done to count the pups while the bitch is pregnant, EXPECIALLY if you plan on free whelping. That being said, to answer your question, your girl can have anywhere from 1 to 12 pups. Average litter size for a medium dog is probably about 5-7 pups. Be wary if your bitch strains and contracts for more than 3 hours or so and does not produce a pup. A trip to the vet is most likely required. English bulldogs often have water puppies, and since the alapha is closely related, and similar in structure, it is a good assumption that there are water puppies to be concerned with in your breed too.
Good luck, and keep us updated... we so love puppies!