In the last few days, the back of my head and neck have been really hurting. I have experienced similar feelings off and on before but it has never been this severe. It s not crippling, but it is difficult to bear. My neck is also really stiff. The type of pain is a soreness with a lot of pressure, but it can also be throbbing at times. I also have a headache in general. It is in the front, back, and both sides. The onset of this pain was sudden, but it is constantly and consistently getting worse. At this point, it hurts to even move slightly because the pain increases dramatically when I move my head or neck. I have also been feeling sick, fatigued, and achy in general. What could be happening?