the day before yesterday I took my 17 week old american bulldog female (30 lbs) to the vet for her last set of shots (including rabbies, deworm, heartworm). When we got home she throw up, and came down with all the symptoms of UTI. yesterday I took an urine sample to the vet, and the results came back today with all the signs of UTI (white cell production, a little blood, and very diluted urine, as my puppie's been very thirsty). I was told by the vet that it is very very unusual for puppies to have UTI, and the vet's diagnostic was not completely conclusive ("most likely, but not sure" the puppie has UTI). She sent me home with CLAVAMOX 250 mg twice a day for 3 weeks. Is this response (not conclusive) + prescription what I should expect in this situation? Should I get a another opinion?