Thanks for providing more information.
Well as you describe possible cause may include Cervical spondylosis.
(any condition that puts pressure on the nerves where they leave the spinal column which after passing from neck radiate to arms resulting in radiating pain.)
As you have headache so it can be cervicogenic in origin.
So you should undergo an MRI/X-Ray examination of the cervical spine ( AP and lateral views) and a clinical examination by either Orthopedist or Neurologist for further evaluation and management if your symptoms'll persist more than a week.
Do gentle massage with muscle relaxant ointment and apply warm compresses on neck .
Also take OTC Motrin.
Physical therapy,neck stretching exercises can be helpful in your case.
Avoid strenuous activities.
I hope this helps.
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