You probably have bad sleeping (positions), ie. sleeping on your stomach twists your neck, If you sleep in that position repeatedly, it has an , accumulation affect to where the vertebrae in your neck can become "stuck" putting prolonged pressure on the nerves in the upper part of your neck/spine which are responsible for the blood supply to your brain. It sounds like you need to seek qualified Chiropractic care for an upper cervical specific adjustment to your neck/spine!

Perry P. Little Jr.