Oh wow, I'm so sorry you're dealing with MS! I really hope this helps. It did for me with my autoimmune disease. I had had Graves' Disease for almost a year when I finally decided to try going gluten free. Within two weeks, my hyperthyroid symptoms resolved completely, never to return. At that point, I also had suppressing antibodies, and those took over and I was mildly hypothyroid for about 6 months or so, but eventually that normalized too. This way years ago at this point and neither have come back. In fact, last summer when I had blood drawn I tested for the antibodies as well as the usual levels of thyroid hormones, and they came back at undetectable levels, so I feel like I really completely healed from my autoimmune disease.
Just FYI, you must be extremely vigilant and cut out every last bit of gluten from your diet to see the results. Even a tiny amount will have your body reacting to it. One time I accidently ate a very tiny amount - a few breadcrumbs in a deviled egg (this way obviously pre-vegan, lol). And my dermatitis herpetaformis came back and lasted for 6 weeks from that very small one-time exposure. Whew. Thank God my autoimmune thyroid disease did not come back.
So in the beginning, check every label and call the manufacturers if they don't explicitly state gluten free on the label (like for tea and supplements and stuff like that.) I'm sure you probably know, but soy sauce, beer, regular oats and blue cheese also contain a small amount of gluten, so avoid those. And give it a good shot - I'd recommend several months at least, but hopefully you will notice a difference even sooner. The fact that you are experiencing something in reaction to giving up gluten, even if it feels negative right now, gives me reason to think that giving up gluten will improve your health.