Help me with my diagnosis?

I am 33 years old. When I turned 30, I was diagnosed (due to symptoms of pain, exercise irritability. migraines,etc) with fibromyalgia. The same year, I was diagnosed with mild hearing loss, high blood pressure, and TMJ. Since then, I have gone from being able to work full time, to not being able to work at all. I am no longer able to stand or walk for more than 10-15 minutes, at a time, and usually end up supporting myself on a buggy of some sort, or in a motorized scooter (if one is provided at the store) I have been tried on Lyrica, Cymbalta, Savella, Nortryptaline(sp?) and then Norco and Robaxin, with Tylenol XS, for pain. Nothing helped. I finally broke down and asked my doctor if I could get a prescription for a cane, a scooter or some way I could get out and do somthing. He gave me an rx for a cane, but told me my diagnosis was not indicative of any reason I would need a scooter. (regardless to the fact that I was unable to stand to shower, to do dishes, house work, grocery shopping, etc) i sat down and wrote him a letter, describing just a week of my life. I handed it to him. He finally (I truly believe it was just to shut me up) referred me to a surgeon to have a muscle biopsy done) I had a muscle diopsy on the left and right oblique pelvic girdle? muscle. 3 weeks later I received the following diagnoses (will include the addendum to pathology report_)

1. -Mitochondrial Myopathy with fiber necrosis, rare.
   - Rare perivascular aggregates of chronic inflammatory cells.
this was also found on the left side.

Addendum
PAS Glycogen Deposits and not excessive
NADH enzyme reaction: no cord containing fibers: no moth eaten fibers
ATPase reactions at pH 9.4,4.6,and4.3: Atrophic fiber population consists of type 1 and 2 fibers; no fiber type grouping
SDH: scattered ragged blue fibers
SECTIONS OF PARAFFIN EMBEDDED MUSCLE
PAS Vascular basement membranes are not thickened
EPON embedded muscle sections
1um? sections stained with toluidine blue: no additional data

In the microscoptic description, there are phrases like, 1. fiber diam. range from 11-88um (1,2) split fiber (1,2) fibers with internalized nuclei are increased (1,2) rare necrotic fibers (1,2) regenerating fibers with unusual clusters of oval inclusions (2)  no endomysial chronic inflammation (1,2) but rare inflammatory cell aggregates around epumysial vessels (1)  scattered nuclear knots (1,2) no vasculitis (1,2)
Modified Trichrome: Rare classic red fibers(1) rare fibres with limited sub-sarcolemmal deposits of red, granular material(2) inclusions in degenerating fibers appear red in the trichrome stain, no fibers contain streaming, z-band material

I have been referred to a specialist. My own doctor had never even heard of the diagnosis, so could not offer me any information on it.

My questions are: Would the diagnoses I was given be the cause the my symptoms and I am not imagining the weakness and pain?
Could the inflammation mentioned be an underlying inflammatory disease or some sort of inflammatory myopathy?

[Caryopteris]

You are not imagining your problems - the evidence  is all in the tissue biopsy.  It sounds like it is uncommon, and there is a wide range of symptoms and severity.  Here is an article that talks about mitochondrial myopathy.  

http://www.medterms.com/script/main/art.asp?articlekey=6374