Not only the organ damage, it may not be a migraine. Unless you have had them before, had them diagnosed , you can mistake other headaches for migraines. Also, meningitis ( not only the dread bacterial that we hear about) can feel like a migraine. There are other organic causes for migraine/migraine-like pain. Everyone should have a migraine, other other bad headache, profesionally diagnosed just to be safe.
Is it over?