I am a dreaded Employer.
As an employer we can terminate "at will" as long as our cause is not protected by the constitution. You were let go because of attitude problems. That is their cause and it is not protected by the constitution. Your employer, however, would lose any unemployment hearing because they did terminate you. I would not worry too much about it.
It is a valid point raised about touting the FM. Unemployment could very well decide that they are not the government agency that should be paying you and send you into the sea of red tape to get on disability.
It is never easy being fired, but businesses must do whatever is in the company's best interests. Unfortunately that means that sometimes someone gets the short stick.
God sometimes closes doors so you will look through the windows at better opportunities. I wish you a better and more understanding job than the one you lost! :)
I had a friend who lost her job of 5 years because her boss didn't want her to "express milk at work". (She had just had a baby, and was breastfeeding. She wanted to use her breast pump in the ladies room during her lunch break).
Outrageous for her to be fired for that, right? Well, her boss also denied her unemployment. My friend took her to court, and won very easily. My point being, the folks at unemployment know an unfair case when they hear one. I really think they will be on your side.
For you to be fired for having fibro is outrageous, and you should fight tooth and nail. Good luck to you, you can do this!