I am not sure what you mean by "carrying the puppy in her chest". The uterus in dogs is not located in the chest cavity and dogs to not hide their puppies under their rib cage. If you dog is pregnant with a normal sized litter she should be showing prominent abdominal distention at this stage of the pregnancy. It is possible your dog is not pregnant or may have a singleton litter. To make sure your dog has a healthy pregnancy and delivery have her examined by a veterinarian. A x-ray will confirm pregnancy at this stage of gestation (pregnancy) and is the best way to estimate number of puppies.
