Welcome radarmomma. I am sorry, but I have no idea at all in how to even direct you for information. Does your doctor have any idea what may be the cause of the problems?

I am not familiar with fibro, but have read many posts where others have experienced sudden weakness in legs and they blame their autoimmune disease.

Have you tried the fibro forum here? http://neurotalk.psychcentral.com/forum12.html

Hope you find an answer soon.