I have been suffering with continous severe headaches for twelve years now. I have done all treatments available, done all the meds and seen several specialists.
I would suggest still seeing a TMJ specialist just to rule out a tmj disorder to make sure. I was disagnosed with such but my headaches have continued. Bowen treatment was also a tx i tried but no success.
Also I would suggest seeing a neurologist who specializes in headaches.
You mention London: Ontario?
I don't know how long you have been suffering with migraines but I would keep a journal, i am on my nineth journal.
Hope to hear back from you.