This sounds like an emergency!
Your puppy has not had her full set of vaccines, therefore she is not yet protected from diseases such as Parvovirus. Parvovirus can be deadly in puppies. The symptoms you describe could be due to Parvovirus, Gastrointestinal parasites, and other gastrointestinal diseases.
Please take her to the vet ASAP!
Please apply for Care Credit, if you don't have the money right now.