richy,

You are still very early in your recovery. You may also have a subtle neck injury. Icing your upper neck may be helpful. Not just once but multiple times a day for a few days at least. I have instructions for making crushable ice packs at the bottom of the sticky at the top called "Vitamins".

It will also help to maintain a good straight neck posture, especially when resting or sleeping. You are lucky your friend did not break your neck.

My best to you.