Sometimes when you get the flu shot you get all the signs of the flu. Just on get all the bad stuff that comes along with it! If you muscles hurt were you got the shot that is normal but if it is somewhere different then I would go see the doctor just to be on the safe side!! Good Luck and God Bless!
I think that what you are having may be just some side effects of getting the shot
Here are some signs of serious reactions
Any unusual condition, such as a high fever or behavior changes. Signs of a severe allergic reaction can include difficulty breathing, hoarseness or wheezing, hives, paleness, weakness, a fast heart beat or dizziness.