this is not an answer to your question but i would like to ask you something. i think i have an idea of what you are going through. since friday early morning until yesterday evening i have had really bad pounding migrane headaches. i took excedrin migrane and it went away within minutes. i still have a lingering very small headaches right now. it sounds like your episodes are over, is Imitrex over the counter or prescription? i don't have history of migranes except once in 1996 and those were horrific. i know using over the counter medication is not good but when it comes to migranes i will do almost anything to make that pounding stop.