I am sorry to hear that Ellie is not eating. My name is***** am a veterinarian and will do my bst to help. I just came online and saw you question. I am sorry you did not get help from an expert before now.
It will help to know what the injections were that she got. We're any blood tests done to try to find out if there is a reason for her not eating?
Is she losing weight?
It would help to know what the injections were if you know.
When a cat won't eat it means that they are ill or painful. It would help me to see her blood tests and to know what was and was not tested for. She may have pancreatitis, which has to be specifically tested for. If blood tests are normal, my next step is to to Xrays or an abdominal ultrasound.
You could try appetite stimulants such as B12 injections, cyproheptadine, or mirtazapine.
Convenia is an antibiotic that lasts 14 days. Metacam is an anti inflammatory that also is good if she has a feve, but it only lasts 1 or 2 days.
Unfortunately, Metacam can be harmful to some cats kidneys, so if a cat got Metacam and the is not eating well, I always do blood tests to check kidney function. Were the blood tests done after she got this injection?
I would need to examine her myself, and look at blood tests to start to figure out what is causing her not to eat. Taking her to your veterinarian is your best next step.
Thanks for the great rating. Please let me know how she is doing.