I am sorry that you have gone through all that and wish that I could make it better. I would try contacting whoever conducts the test and have your Therapist explain the situation. You never know they might work something out for you like taking the exam in a non school setting. As far as calling your Therapist I would most definitely do so and explain to him the situation. He may have ideas of his own to help you through this.

I wish you only the best. Take care.