Hello. About three weeks ago I had a flu shot for the first time and about 4 hours later I was feeling bad and my eyes were red. My boss sent me home and I got worse but in the morning I was fine but I noticed I had a pain in my lower back. I thought maybe I slepted wrong. so blew it off. but now my pain is worse and to get up after sitting a little while from my job or get out of the car from sitting a while it takes me a minute to straighten myself out because I am in so much pain. I have not done anything that would have pulled a muscle in my back. I did call the doctors office and talked to the nurse and she said that the flu shot would not have had anything to do with it. Do you think that the flu shot could have something to do with this because I was perfectly fine before that? thank you