From the details you have mentioned,its clear that the area of extraction socket has not healed completely.
The metallic taste
and existing toothache may be associated with development of dry socket
at the extraction socket area.
Chances of TMJ dislocation has to be ruled if you have undergone through traumatic extraction.
Take complete course of antibiotics-analgesics.
Gargle frequently using warm saline and betadine
Avoid anxiety and stress.
Also cause of fibromyalgia
has to be ruled out and treated by a physician.
Hope this helps.