By the way OP, sorry about your pet. I hope it doesn't die and gets better. I truly think you should take your pet to the veterinary before it dies in order to have some evidence that it was indeed in a critical/poorly state. So if your pet does die, let's hope not, you could go back to the veterinary and speak to them for records you could have in order to provide for the examiners/exam boards. Your entitled to these records so there wouldn't be any problem. Just explain your situation. Wish you the best with everything, including with your exams.