feels like a full on exacerbation

I have had a heavy, weak right leg yesterday and today. Today my arm wants in on the action. My right arm is heavy and weak and hurts terribly.  I am so fatigued. My body and my mind want to just go sleep for a year!   I am at work today just because I know that if I use up my time, I won't have any when I really cannot walk at all.  I don't know if I can hang in long tho. 
My mother spoke with me this morning about my job. She told me that my sister told her of my boss sending my doctor a letter asking for information regarding my disability.  My mother urged me to hire a lawyer.  She is a retired nurse and she said that the boss is overstepping their boundaries. It is very illegal of them to ask for that type of information.  I told her that I knew that, but am just waiting for the boss to fire me for inability to do my job.  At that point, I am going to an attorney and sue the county and collect unemployment. I will also file for SSDI.  I feel that is where things will be leading me.  I told her I am just going to come in and work and wait.  Today tho, I feel like just leaving and finding that attorney.  I just don't have any energy to work and help people. 
I find myself becoming depressed as well. I just can't do what I want to. My body has betrayed me. My mind seems to be leaving me as well some days.