Sarah – welcome to ThisIsMS. This group will help you in any way we can; for the most part, we are not medical professionals, but we will share our experiences and answer your questions as best we can. We are a group of unique individuals, each with our unique ideas. We often do not agree in these ideas, but we try to be respectful of the differences.
I do agree with NHE and want2bike and their recommendation to find a new doctor and start over. I do not think Functional Medicine practitioners are common yet, but they are just what we all need and will certainly be the wave of the future. Find a compassionate GP or internist – someone you are comfortable working with – someone who is willing to be on your "team."
My current personal suspicion is that visceral fat (internal fat around the organs) secretes cytokines which affect organs, such as liver and pancreas, to function incorrectly (and in the case of the pancreas, to produce excess insulin; in the case of liver, metabolic problems result); excess insulin promotes inflammation; inflammation results in more visceral fat. Round and round the cycle goes. Diet and exercise are probably the most effective at interrupting the cycle.
All the best to you in your journey; you have friends at this site.
My hypothesis: excess insulin (hyperinsulinemia) plays a major role in MS, as developed in my initial post: http://www.thisisms.com/forum/general-discussion-f1/topic1878.html "Insulin – Could This Be the Key?"