I didn't get to take my Imitrex (sumatriptan) until about one hour after my migraine started and it won't go away what can I do?

Try Ice. A successful treatment used in the united kingdom is ice: best done with soft, flexible gel ice. With cloth to protect skin apply ice front and back of head for 20 minutes, repeat with new ice sheets two more times for 20 minutes each time. Careful for frostbite! you are doing it right if you need to get under covers, you are so cold. Stops 50% migraines, um, cold in their tracks!