Suggest Treatment For Muscle Weakness And Pain In Legs

I ve been experiencing the following symptons since 2001 and have seen a Dr. and been in the hospital without knowing what s wrong. I am sick 2 or 3 weeks out of the month. I have migraines, which I m taking medication SUMAtriptan and Buprenex. I m taking DRONABINOL for nausea, BUPROPION for depression, TRAZODONE, ALPRAZOLAM and IMIPRAM HCL for insomnia, I also have muscle weakness and pain in my legs/arms during my sick period. I also take the following medications - Estropipate, MINOCYCLINE, ACYCLOVIR. They thought I might have MS but have never been diagnosed. I m at a loss and don t know where to turn.