Sorry to hear that the shot was so bad. It bothered me for a few days but then I was fine. Just tell yourself it is better than getting the flu, that would be much worse. It would be for me anyway; it would take me off my feet for a few weeks.
Take care, things will get better .
Several yrs. ago my husband had a flu shot in one arm and a pneumonia shot in the other arm. Can't remember which shot (surprise!) but the nurse hit something and he had tremendous pain, that has tapered off to a achy pain still in the one arm. The other arm is fine. I'm sorry you're having a bad time right now, I do hope it subsides soon. At least you shouldn't be bothered by the flu, I had it last yr and it refused to leave for ages. It was my new best friend .
Hope you feel better soon, and welcome to the family!
God bless. Alice.