ache of the head

can anyone out there describe for me what migraines feel like? i get these intractable headaches sometimes, and OTC pain relievers don't touch them. i have one today. it feels like i'm wearing a hat knit of pain. bright lights are bad. moving around too much is bad. i don't feel nauseous, and food still sounds yummy, but i don't want to eat any of it.

i've always assumed these headaches are related to my TMJ (which in turn is stress-related), but i'm not so sure. if it were muscular pain, it seems like aspirin or ibuprofin would alleviate it.