This is so frustrating, I got the flu shot on February 12, 2015, the next day my shoulder started hurting so bad, I shrugged it off since some say your arm will hurt for a few days after the shot. Not to mention I have had like 10 in my life and never had a problem. The pain started to get so bad, I went to Urgent Care, I showed the DR. what I found on this site, and they of course never heard of that. I went to my Primary DR. and got an MRI, it show I have severe Tears in my shoulder and they said it can't be caused by a flu shot? I have never had any shoulder issues before until the shot? I have an appointment with a orthopedic so I'll try again to see if I can prove my case. This is so frustrating. I am in so much pain and for what?