What Causes Chronic Pain And Tenderness Behind The Neck?

the back of my neck hurts bad from pain level from 1 to 10 its a 8 or 9, its tender when being squeezed. I cannot turn my neck back and forth I have to turn my whole body to look back. I feel sharp pains, like a knife cutting through it, i feel tightness, at times burning sensation. the pain prevents me from getting some sleep, over the counter meds help a little. its been this way for a week now, i have not gone to my doctor but i do have a appointment for Monday to go see her, i am just wonder what it can be for now