You need to ensure that your immune system has the capacity to fight infections and that part of the fibromyalgiz symptoms are not actually secondary to underlying infections.
An Immunologist/Allergist should be able to request antibody levels (IgG,IgA,IgM) along with specific antibodies
to check that these levels are normal. Diabetes
can lead to a secondary immunodeficiency
and chronic rhinosinusitis
then becomes common.