We are here for you even if you just need to have a break down moment and virtual cry.
I would see a new vet if at all possible
I was going to make the same suggestoins.Take copies of every test you've done
A different vet will look at the symptoms and tests done, notice only one thing fits for FIP, and start looking for something else.I'm kind of wondering how I would even go about finding a vet who won't be focused on fip. The second vet I went to requested all of Tiger's records from my current vet. Wouldn't a new vet do the same thing and see fip all over the place and then get it in their head as well?