Hi, I have been haven extreme Head aches in the back of my head with some neck stiffness, last year i wen to the emergency room with one of the worst head aches I've ever had, they did a couple of C T scans an diagnosed it as just migraines. I did not see a doctor any further, about two or three months ago the pain returned with a throbbing pain behind my ears and neck . Should I have an M R I done, Could this be a Brain Aneurysm