Are you wheat intolerant? My niece has vertigo (dizziness) headaches, nausea. She can't eat wheat product like bread, pies cookies anything with wheat in the ingredients.
It could be your blood sugar is high, it could be high blood pressure. Or it could be low blood pressure as well.
It really is something that you need to get checked out. Do you hav a state hospital?
Migraines come in all shapes and sizes. All levels of pain, sensitvity to light, even nausea. If you have a primary car physician, look for a referral to a nerologist