If you are taking a lot of excedrin migraine and advil, these both will cause rebound headaches which will keep the cycle of the migraines going from the caffeine content. The ER will most likely will give you a shot of Demerol to stop the headache, or perhaps they will give you imitrex or Toradol (ketorolac). Toradol has been great for me, but one has to catch the headache at the beginning when it starts, not at the rebound stage or it will do nothing. Demerol also has a nasty rebound as do all the opiates, so that won't help long tern. Find a pain clinic or pain doc to help you with this situation. You are going to have a few rough days which is why you need to have a a doctor supervising all this to ease the pain somewhat. The brain recognizes cold before pain, so if you are not already using ice on your head, start now.and it will work in bits, and they you have to give it a break. That should do it, and try not to drink any coffee either. Right now I am in the middle of a nasty rebound headache from a very bad migraine and it has been going on for 4 days, I will be into my 5th day shortly. Your neuro does not sound very helpful, so try to find a pain doc, or pain clinic that can help you through this. If you cannot find a pain doc, find any doc that will help you, even at the ER which should have a pain doc on staff. It is very hard to do alone, so get help before trying it. I have done it many many times and know all the signs, but I still check in with my pain doc just in case I should be doing something else. I know how debilitating this can be, but I think your medications are making the cycle worse, so you need to find someone to help you get off them. For the nausea try eating a white baked or boiled potato or a piece of white toast with jelly - nothing whole grain. If you don't have any in house, have a fried get it for you. Also ginger ale. You would be surprised how well they work. Good luck and hang in there. It will get better.