Clot - Vet doesn't know why

Hi everyone

My first post here and it's a doozy. I'm hoping someone here can provide clarity.

My (almost) 5 year old Scottish Fold went for her vaccines on Friday. She had all 3 (rabies,leukemia and another.... AHV??). She's never had all 3 at once before, and vomited and had diarrhea approx. 2 hours after the vaccines. The next day we called the vet who said we should watch her. She vomited several times again, and had diarrhea, so we took her in. The vet gave her an injection for the diarrhea, an injection for the vomiting and an injection of fluids. We took her home and she seemed to perk up for about 30 minutes and had some food. She tried to sleep but didn't seem to get comfortable, after a couple hours she vomited and tried to walk but her hind legs weren't cooperating. She started to pant and kick her legs erratically, as if having a seizure. We rushed her to an emergency vet who thought she had thrombosis. They did an x ray and confirmed there was no broken bones. Her CBC had a mild increase in neutrophils, her thyroid was normal,her electrolytes were unremarkable and she had stress hyperglycemia listed under chemistry in her report. A cardiologist was called in and her echo showed normal heart function. An internal medicine specialist was called in and found no obvious clots.
She has a follow up with the internal medicine specialist tomorrow for more tests.
I'm curious if anyone else has experienced something medically similar or has any advice! I should add that her primary care vet is well respected and I don't suspect she poisoned her or anything like that.
Currently she's on blood thinners and a pain killer every 8 hours. She is eating a little but not as much. She's still drinking. She is favoring her right hind leg but is still cruising around. She's been hiding under the bed mostly, which isn't normal for her but I'm trying not to panic and remind myself that she's been poked and put into her carrier numerous times in the past 72 hours. Is there anything we can do to make her feel more comfortable with us again?

Thank you all in advance. I'm so worried about her and also worried that I'm making the wrong choice in trying to find an answer. Maybe I'm just prolonging her pain? I just didn't feel comfortable euthanizing her without an answer...

I know how hard multiple vet visits can be. She will forgive you though and once she is feeling better it will be forgotten within a few days. I wouldn't be surprised if the under the bed hiding is related to feeling bad more than the multiple vet visits. 

Given her reaction I would find out exactly what vaccines were given and avoid that brand in the future in case they are to blame (not poison but maybe allergy to a component thing). That she is eating and drinking no matter how little is a really good thing. I would probably lay quietly on the floor and read a book with her. Just quiet and reassuring that you are there. Otherwise offer her whatever food or treat she really likes to keep her eating. 

It doesn't sound like you are prolonging pain or anything. You are still in the supportive care for her to fight off whatever is happening stage as far as I can tell. Take her to the specialist and hopefully you can get some sort of definitive answer for what is happening. If nothing else maybe her blood work will look better. The sad thing is that sometimes cats get sick for reasons the vets can never figure out. The best we can do is be there and make sure they have everything they need to recover. 

Thanks Kieka!!
That's a great suggestion. I have slept on the floor next to the bed for a little while and have gone in just to say hi, so that we're not only going in for meds. I'm relieved to hear that you'd be doing something similar.
I don't know what to make of those vaccines. The emergency vet doesn't feel that they're related to her issue but I just find it so coincidental... I'll definitely ask about the brand!
Thank you

It could purely be coincidental. It wouldn't be surprising that the stress of vaccines was just a trigger for something else to flare (like I get stressed and my eczema flares up). That said, I would still just avoid that brand of vaccine on the off chance they were related.