severe migraine and neuralgias: help needed?!

Hi everyone

I have chronic constant migraine and nerve twitches (face, back, legs)ever since I went to a chiropractor a few years ago for my neck which had seized up due to stress and the drug Roaccutane.
He cracked my neck and I think this irritated my brain stem and spinal column as the pain became widespread quickly.
I used to be on amitriptyline but came off too quickly to try something else and I haven't been able to find pain relief since. This is partly due to a very sensitive gut: as soon as I try a medication the pain actually increases!
I have had tests which show a lit of abnormal brainstem activity when I try things my gut doesn't like...showing further irritation and sensitivities.
I am bedbound and in constant pain due to this....my face feels like its being cut with wires, I get hot flashes from migraine, my eyes have bright spots constantly , I can even see a silvery colour at the side of my eyes where its fluttering. my ears whistle from the nerves, I twitch almost everywhere and I can barely raise my arms as my the nerves and muscles in my shoulders are rigid. My feet are blue :-( and I can barely wear shoes.
I am under a sensitivity based hospital but they've said if I've become sensitive to chemicals (as I have) they don't know what to suggest.
please can anyone make a suggestion?!
Herbal? Surgery? A different medication?
I am at the very end of what I can tolerate....I want my life back!

thank you