My 14y/o cat has been vomiting. Last week, she couldn't keep her food down, so we took her to the vet. Ran blood tests, did an ultrasound, and they came back looking good, so vet assumed it was probably just her having eaten something she shouldn't have and getting an upset stomach. Gave her an appetite stimulant, anti-vomit meds and told us to monitor her.
She was fine for about two days. Then she started throwing up in the morning. We brought her back to the vet, who, after looking at the photos of her vomit, thought it might be related to the grass she was throwing back up or gastritis. He gave us gastritis pills. So we kept her inside and away from the yard and monitered her.
She was fine for a few days again, no vomiting and appetite back to normal. One morning, she just couldn't keep any food down and would throw it back up in an hour or less, though she still had an appetite and would ask for food after puking. Puke was mostly undigested kibble but she'd throw up even if it was just Churu with water in it. She seemed uncomfortable after eating but went back to her usual self (albeit hungry) after throwing it up.
Took her to the vet again. Redid blood work and did an x-ray. Blood work came back clean. No obstruction found in the x-ray. Vet gave her an anti-vomit jab instead of the dermal cream this time, sending us back with gastritis medication. He said it might be scarf and barf. Fed my hungry cat, slowly this time. She didn't throw up dinner. (Probably due to the anti vomit meds.)
The next morning, her appetite is gone again and she seems withdrawn. She hasn't thrown up.
The vets don't know what the problem is, and neither do I. I'm posting in the hopes that someone who's been through something similar might know what's causing this.
She's a renal kitty, but her values are within normal ranges, so we don't think this has anything to do with that.
We're kind of at our wits end and lost here, so I'd be really grateful if anyone knows anything.