I'm so so sorry you are going through this. I'll write by this weekend with more, but for now, while you are waiting for further medical attention, see what comes up for you, as far as your inner health goes. I am a firm believer that our pains and illnesses are connected to emotional issues (though not always).

I read that migraines can be an indication of too much stress, as you mentioned (no wonder, in your case!) and "resisting the flow of life." Also think about 5th and 6th chakra issues - things regarding will, choice, voice, intuition, foresight, etc.

I think you are on the right track of the nerve thing. Sending you good energy!