Patient: I received my last HPV vaccine shot on Monday March 2, 2015. I noticed that night that my shoulder started hurting and was getting really stiff. I also noticed that the shot was given between my clavicle and my acromion process. I know for a fact that intramuscular shots should be given in the middle of the deltoid muscle and not on top of the shoulder. I have been having trouble sleeping at night because it’s so painful. I also notice my shoulder gets stiff and hurts all the time. Should I be concerned about all of this?