Pain is no friend. As you have experienced(as I have), it steals most of the things that you love dearly. You are much too young to have all this happen to you, but there it is. Like you, I have had doctors tell me that there is nothing else that can be done. I was determined to be my own best advocate. By God's grace I found a private practice neurologist who helped me get my life back. After four years, my symptoms also returned. I have been fighting pain that makes even walking short distances difficult. My faith has helped sustain me through all of this. And, a strong will to find a way to get to the bottom of all this. Keep pressing on. All you need is one doctor willing to look deeper into your medical issues. My prayer goes up for you.