Even having suffered from migraines for as long as I can remember, there is simply no way to adequately describe to you the pain.  And it isn’t limited but changeable.  One time as though your forehead will burst open and frantically clawing creatures fly forth.  The next as though a vise inside your skull were being opened rather than closed so that surely your cranium must crack and break to bits at any moment.  And then, in the base of your skull, down into your neck, every muscle and nerve ending wound as tight as you can imagine and then tighter still.  And yet – this doesn’t even accurately relay to you the agony.  And nothing works.  You can take a medication for a while to dull it, to get through, to tame it into a function-able pain.  Until that medication stops working at all and you have to try something new.  You just have to wait it out.  You just have to make it through.