File for disability benefits.
Appeal your case.
How you presented your initial application was the best you could do at that time given what you knew and were told.
But, if you were not successful, appeal (1) because you are disabled and (2) because you can improve on your presentation.
See this article in the Washington Post re chronic pain by Haider Warraich, MD, author of “The Song of Our Scars: The Untold Story of Pain.”