A. First of all it could be an acute hemorrhagic gastro enteritis (infection of the gastrointestinal tract with bleeding), this can be caused by something she ate outside. If so antibiotics, gastric protectants, anti emetics and special food should solve the problem within a few days. obviously it could also be something more serious, for example pancreatitis (not always shows on a regular blood test) or a tumor. If she received a treatment but doesn't get any better within 3-4 days take her back to the vet.
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