Neck pain not able to move around.

Hi doctor, 3months ago, when I woke up I observed neck pain and it lasts for 3 days. Next time after 1 month, I was not able to woke up in the morning. I hold my head with one hand and then am able to woke up. Applied ice then it started coming down. It was there till 10days,day by day it started reducing. Yesterday during sleep I suddenly woke up straight and tried to sit. Observed severe pain and lied down. I was not able to hold anything with hand,if I hold that is paining at neck. Then I took medicine and by 3pm I felt some relief and now feeling little better but not recovered completely. I had c section delivery in 2019, and am working as a software employee from last couple of years. Please let me.know why am I facing this issue and what is the solution