Ko2Chances,
Although the quality of the pain of my migraines can take on several different forms from migraine to migraine (sharp, stabbing, throbbing, burning, crushing and any combination of these) I would strongly encourage you to seek out a neurologist who specializes in migraine/headache. Such a healthcare provider will know what sort of diagnostic tests are necessary to rule out organic or other factors.
Personally, over the last fifteen years, I have had several MRIs as well as CAT scans and other diagnostic testing.
I hope this helps. Please do not hesitate to reach out with any other questions. There are a great group of very knowledgeable folks here at Migraine.com. I do not know what I would do without them!!!
Take Care,
MB