We were advised to give her a flu shot and pneumonia vaccines. It is most likely the
pneumonia vaccine that is causing the pain and the lump. She had a SEVERE reaction to the vaccine. Her arm swelled. The shot site was huge, very red, very swollen (have never seen anything like it). She also, became extremely, extremely ill (unstoppable vomitting, high fever). She was sooo sick. I had the same vaccines at the same time. the flu shot did not hurt at all.