I have fibro also...and many of my symptoms were attributed to it. It took me at least 3 years after my first real MS symptom (numb toes) before I was put on MS meds...
Keep a symptom journal with dates of onset & dissipation of symptoms so when you do see a doc you have documentation.
It is also wise to keep a daily log of how you are feeling, just for your records. Not to focus on illness, but so that you see how you are doing. Record also when you feel good!!