It can take quite a long time to diagnose fibromyalgia so I don't think it's advisable to "raise an official complaint " so soon .It's not a thing that can be diagnosed by a simple blood test .
It has a point test usually .
There is usually pain at certain points on the body .
They call it the eleven point test .There are lots of other symptoms too .
It's a difficult thing to diagnose .Hope you can get some help Icg .
Have you looked at the forum ?
http://www.ukfibromyalgia.com/forums/