I have disability but didn't have a family member fill out anything nor did I have a specialist. I've never gone to a rheumy. But, I do have other illnesses so I notifies every doctor I saw and had them send my records to social security. I was given paperwork to fill out myself, and I did that and got it back to them in a timely manner. Lastly, they sent me to their doctors who, by the way, weren't nearly as good as my doctors! Then I waited a few months and I received disability.
Dealing with your relatives can definitely be playing into your intense pain. You are under tremendous stress and that will make you absolutely miserable with fibro. Donna gave great suggestions. I used visiting nurses for my mother when I was taking care of her. They would come and bathe her and help out that way. It was a blessing and it was covered by Medicare. Since they are still at home, the Meals on Wheels is a great suggestion, too. It will take some of the load off of you.
Sherrine