Cheerful how's the flu? Yes, our plan does cover imitrex, but stupidly limits how many/how often you can refill it, which is far less than I need. After the limit, you're on your own cost-wise. And you would be appalled at what we pay for the same drugs as you - I really don't understand it, it is astronomical.
Sorry to hear about your migraines getting worse. I am also holding out hope for menopause, my grandmother also said she had only one migraine after menopause. But as I had them as a very young child, I sort of doubt that they are hormone related, iykwim. 
Glad to hear the migraine has let up Valium. No, we are the "universal hopeless wait list health care" system, but there are also private options depending on where you live. MANY people where I am are years and years waiting just to get a GP, forcing huge numbers of people to go to the ER (A&E) just to get basic health care and clogging it up for people who really need it. There are not enough hospital beds because the beds are full of so many people to be in Long Term Care; not healthy enough to go home but don't still need urgent care...but not enough LTC spaces for them to go anywhere. You will regularly see hospital beds literally lining the hallways because there are no rooms.
Prescription drugs are ridiculously expensive, which is v. frustrating as the US is right next door and the same drugs are so much cheaper there.
The worst thing is if you need any kind of significant test. I have now been waiting well over a year for an MRI and still haven't gotten a call just to book it. Yet if you can/will pay the money, there is a lovely clinic just over the US border that will do it in under a week.
I suppose there are pros and cons to any system (can certainly imagine the US system being devastating if you became ill and didn't have good insurance), but for people here who have money, the service in the US blows ours out of the water.
Sorry!
Imitrex is a brand name so maybe not the same, but maybe ask your GP for a sumitriptan, which is the type of drug it is?
On another note, has anyone ever seen a room with red walls? How did it look?