How Do You Know When Your Dog is Pregnant?

Take her to a vet.

Take her to your veterinarian and he can palpate her or take an X-Ray. If she is pregnant, please have her spayed after she delivers her puppies and is done weaning them.

Your vet can do a PG test after 4wks have passed since she was last in season. To do an x-ray early in the pregnacy would harm the puppies. An ultrasound will confirm and give you an ideal of how many puppies she will have.