Hello and Welcome to HCM,
Thanks for writing to us.
What you are experiencing is called 'Radiculopathy'. It basically suggests entrapment of a nerve root
in your cervical spine
in its origin or course.
It can be caused by lifting weights, episodes of over-exertion during work, long hours on computer, inappropriate posture while sleeping or sitting, lack of proper nutrition-exercises-rest-recreation or any other relevant past medical history.
If it has been persistent or even increasing since few days, you need to visit your orthopaedician. Depending upon the clinical findings they might ask you to get an MRI
done, which shall help establish a diagnosis and in turn allow one to formulate a treatment plan.
Hope this helps you.
Wishing you good health...
Dr Saurabh Gupta.