Burning leg pain & weakness

I have recently went to the Fibromyalgia & Fatigue Center in Pittsburgh as I am looking for some answers to a lot of health issues.  I have been diagnosed with hypothyrodism, fibromyalgia, sleep disorder, depression, etc.  I am currently very fatigued and have also been having chronic burning leg pain that is usually worse in the evening.   The doctor is Pittsburgh said that my body is toxic and has not taking out the trash and I am currenly on an antifungal medication for yeasth overgrowth.  I have a constant running nose (drip, drip).  I am concerned about what is causing my leg pain.  Could it be the toxins settling in my muscles, or problems with my lympth system. I think that I could also be suffering from chronic fatigue syndrome.  My potassium is also low from a hair sample that was recently done.  I also have adrenal fatigue.  The doctor ordered thousands of dollars in lab work which is currently pending.  I go back for a doctor visit on the 31st.  If you have any words of wisdom before then, let me know.  Thanks.
Karen