Severe pain in Back of Neck. Relief.

Hi,my wife Was having Neck pain on back of Neck but after showing it to Our Regular Family Doctor & Taking his Medicines her pain Subsidized & Remained only 5%.After 8-10 days She took her Covieshield Second dose and from very Next day Her Neck pain on Back of Neck Spiked a lot That She is not even able to move her Neck.Not at all able to sleep,thn our Family Doctor prescribed ETOSHINR MR tablet Two times a day,After Taking 5 doses She is having only 10to15% Relief,But at time of Sleeping & Turning Around while Sleeping She is Having Very much Pain & While Getting Up also She is having Unbearable pain and Discomfort.Its Really Affecting her Day to Day Routine & As we Have Two Small kids it's getting Her Difficult to look after,Due to Severe Pain and Discomfort. Does Pain Got Back Because of Vaccine. Please Suggest me Why is it Paining her in Back of Neck and What should be fast Relief Treatment & Painkillers for instant Relief.