It's entirely possible your puppy is having a reaction to the shots. If you're not sure if the vet is up to snuff or not, bring puppy in for another opinion to another vet. Pups this young shouldn't go without food and water for very long.
Please keep us posted as to how she's doing.
I'm firm - but fair. Mind the rules and enjoy your stay.
According to the Humane Society of the United States:
There are an estimated 3-4 million dogs and cats euthanized each year in the US alone! PLEASE - spay and/or neuter your pets!