I am so sorry you are going through this. I was having severe, daily migraines for 8 years. Nothing helped much until I read a story about how nerve ending get worn down and the author was told to take 2 x 500 mls of magnesium daily. I tryed it immediately and within a week the pain was about half as intense and in 3 weeks I had pain free days.
I also removed myself from all of the meds I was on.
Good luck.