they have labeled me a "drug seeker"... thought the ER was there to help

Since I had my first migraine April 1st....I have been in the ER several times awaiting my upcoming appt with my neuro doc. I have a migraine care plan from my doc....but that seemed to only make matters worse the last time I had to go to the ER. They have asked me not to come back. I dont have any history of anything like this with them until present. I am very frustrated. My doc has me on meds....but its finding the right ones that work thats hard. Until then...I get sharp pains so badly that it sends me to my knees. My eyesight goes blurry, tingling in my arms.....its the most horrible thing that has ever happened to me. I realize that at the ER they cannot work magic....but I wish they could understand that even if what they give me only offers a night without pain....its worth it. I know that the headaches will keep coming....but I'm afraid and I dont know where to go when it happens.