Wondering how you are doing now. I had a flu shot about the same time that you did. I am 72 so probably got the same "senior" shot that you got. Two days later I had pain in my right sciatica and in my neck. Eventually it moved from the right to the left sciatica. Neck pain is sometimes everywhere, sometimes on one side. I'm having physical therapy after going to a physiatrist. Both the physiatrist and the PT seemed familiar with this reaction. However, my internist said it is not from the flu shot. I disagree. Just reading this page, and knowing what happened to me …. our bodies' immune systems are fighting the flu vaccine.