You should take some hot water fomentation and the stretching of the neck muscles (specially trapezius), take rest at home... Go to a Physiotherapist get the ultrasonic therapy,  TENS and hot pack with some stretching and strengthening exercises.  You will get relief for sure . And plese correct your posture, avoid neck bending(prolonged),  use of Mobile, laptops should be avoided for sometime and avoid cold exposure like AC cooling.

Possibly incorrect posture plz find some time to see some appropriate physiotherapist and get it corrected and thus it will address any pain!

Hot fomentation x twice daily. Neck Exercises. Neck Stretching. Postural Correction. Shoulder Shrugs . Core Strengthening Exercises. Take frequent Breaks at work Use cervical pillow. Use Back Support. Self Massage the back of neck.

Spasmic pain can be due to incorrect posture, prolonged sitting. Age is another factor leading to degeneration of cervical spine. Both degeneration and weakness of muscles needs physiotherapy. If pain is too much and acute then u need rest and medications.

Dear friend You need to go for neck stretchings. It ll help you for sure.

This can be due to cervical disc problems. A lot of nonsurgical interventions available to treat it.

This can be due to Cervical Spondylosis Please share your X Ray Neck and MRI Neck Images and Reports

In my advice you should take rest first.dont use laptop mobile and heavy work .10 min hot fermantation than isometric exs of cervical spine in supine lying position.light needing massage on trapzius muscle than cold compression by ice pack for 10 min.it will help you . correct your posture to while sleeping and sitting. If not reliefes than consult to orthopaedicen.

Hello there.  I can understand your concern.  You could take a tab. Zerodol-th 8 twice a day after food for 2 days. If it still persists, consult a orthopedician in person for further evaluation and management.  Detailed history, clinical examination and some tests would be required.  Best regards. Dr. Anil kumar jain. Bangalore.