Has anyone else ever get headaches for almost a yr at a time?

i have and nothing showed up on mri's, my neighbor suggested recently that maybe i was sleeping wrong by using two pillows instead of one, guess i was twisting my neck, and then my neck would hurt too, so i took a pillow out and just used the ledge pillow and now my neck and head is slowly healing up and i feel so much better, wondered if this has happened to anyone else.