I was just doing something and my kneck popped and pain shot down my arm. Now this used to happen allot before I had my surgery. I'm not sure if its just a sprain or serious.    
Can a simple sprain cause this and I can take some ibuprofen or something and it will go away or is this even more serious?     
I think I'm missing c3-4 or something like that in my kneck from the surgery.   
It feels like a light burning now and I feel stiff.     
If I can avoid going threw a MRi that would be awesome because that machine scares the hell out of me.