You still may be able to get some assistance through the Equal Employment Opportunity Commission (EEOC). In most states there is a law regarding firing an employee just BECAUSE they have a disability. However, you said you had PTSD. I'm not saying that you did anything and this is a generalization but if you said or did something that violates company policy/rules you can't blame it on PTSD and expect to hold your job. A disabled person has a duty and responsibility to their employer just as any other person does.

My spouse is currently making provisions for a person with Lou Gherig's Disease (ALS). Some employees don't like it because this person is demanding and requires assistance, but if he wasn't, he wouldn't get the provisions required under the Americans with Disabilities Act.

I'm sorry you are having such a hard time and wish you all the best in finding another job; may it be exactly what you need and want. God Bless!