This has been a long journey for my daughter Nicole and myself.  Other family members have been involved as well but there is such a bond between mother and daughter, her pain in my pain.  As I write she is sitting in her room frustrated and worried.  At 26 and looking forward to lifetime of this pain, fatigue and questions I can't imagine what else goes through her mind.
A few weeks ago I found this site and posted a question about Fibromyalgia and antibiotics.  Nicole had recently been on antibiotics for a sinus infection and had 10 glorious days pain free.  That after 12 months of pain unless taking strong (addictive) pain medications.  She had a brief reprive last spring when being treated for pnemonia which she will also have a chest xray for on Monday as it seems she has it again.  I am anxious to find out if her reaction to being on antibiotics is the same.
The posted reply of a few days ago read -
Yours is a very interesting observation.  Fibromyalgia is believed to be triggered by one or more stressors.  One of the stressors, identified as a potential trigger, is infection.  The citation that follows is for an excellent article titled Fibromyalgia: Update on Mechanisms and Management, which recently appeared in the Journal of Clinical Rheumatology, 2007 April, Volume 13, Number 2, pages 102-109.  I suggest you share your observation and the above citation with your daughter's physician.
I have requested the article from my library and am anxious to take it to the doctor.