Hello,
I have gone through your query and understand your concern.
Do not need to much concerned about this, this is mostly of
muscle strain or sprain due to injury in the neck before 2 days.
You have to concern if you have any shooting pain, numbness, tingling or weakness going down from shoulder to arm and fingers.
Further symptoms like
dizziness or headache are also to be concerned.
Because these symptoms indicate the nerve or
nerve root compression or
Slipped disc. This needs immediate evaluation and treatment.
If you do not have these symptoms, then better treat by following
Rest- Give rest to neck. But slight movement is always encouraged.
Ice or Heat packs over the neck for 15 to 20 minutes alternatively every 4 to 5 hours may help in relieve inflammation and pain.
Gently massaging the injury might help to loosen the muscles, though it is important to avoid massaging too deeply, as re-injury may occur.
Take pain killers like
Ibuprofen will help in reducing pain and inflammation.
Hope this helps.
Please write back for further queries.
Wishing you good health.