Wow! Am I glad that I found this website as I received my flu shot a week ago, and like you, I also received my shot higher on my shoulder and 2 days later I started with this pain in my shoulder and a popping noise at times when I move my shoulder. Sometimes the pain is sharp and stabbing. I'm going to my doctor this week and am going to mention this to him. I'll re-post if I find out more and to add any treatments, etc that he gives to me...I thought I was going crazy but I now know that others had this same problem.View Thread