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Hello, I am Dr Ola and I would be happy to answer your questions about Shadow. I am concerned that her previous infection is not healing on the Convenia injection alone. Therefore, it is likely that her fever has returned and is leading to to the anorexia and lethargy. Unfortunately, cats can become fatally ill from not eating for even a small amount of time and three days of anorexia is definitely a medical emergency. I strongly recommend that you go ahead and take her in to an after hours emergency vet hospital right away. If you call your veterinarian's main clinic number, it will likely give you the contact info for the nearest emergency hospital. She will need fluid supplementation (either subcutaneous or intravenous) right away both to correct her dehydration as well as begin to bring her temperature down. She will need to have further tests done to rule out other bacterial, viral, fungal infection or parasitic disease that is causing her symptoms.
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