Sorry you got turned down, but I'm glad you're going to a lawyer to fight this nonsense.
I had filed and was turned down, got a lawyer, got turned down again. Then I was scheduled for a hearing. I won! I was never checked out by 'their' drs.
My DH had a lot of health issues, his work put him on STD, w/ the idea of going into LT and they figured by the time that ran out, he would be covered by SSD. I told my atty about my DH and his health issues. He filed for him the 1st time. My DH was sent to 'their' dr. I feared the worst. The dr was wonderful, couldn't understand how my DH had worked for as long as he did. He was ok'ed w/i 6 months.
The funny thing was none of our drs would write that we were disabled. Yet, when we went to our pcp to ask her to fill out DMV form for handicapped parking, she had no problem at all. We both have permanent tags for our cars. Our lawyer just shook his head when we told him.
I don't know if you keep copies of your lab work and tests. If you do, great, it will make it easier to give 'copies' of your copies to the lawyer. If not, he has to order copies from your drs and there will be a small fee that you will pay. But from this point on keep copies of everything you have. Protect yourself.
I hope it goes quickly for you. You're in my prayers.
God bless. Alice.