Sounds like inflammation of some sort... I would have it looked at for sure... before it starts to hurt worse... good luck
I agree with Kavin,
It does sound like a pinched nerve. See a doc and get an MRI. I hope it subsides but by the symptoms better to be safe and see if they can figure it out.
take care,
mkh9
It sounds like a nerve or something is being compressed in your neck when you move it a certain way, you should really see a Doctor.
Take Care