Has anyone ever experienced flu-like symptoms associated with back pain. This has happened to me 4 times. The first time was last January. I was watching a movie at 2 a.m. and 10 minutes later I was aching really bad all over but worse from the waist down, I was freezing so badly that I was shaking. I got up to go get someting to drink and I could barely walk from a combination of the body aching and the shaking from being so cold. My temperature was even up, I went from feeling normal to a 102 temperature within 10 minutes. I ended up back on the couch with a quilt and a heating pad, I couldnt get warm no matter what I did. I finally went to sleep and when I woke up 6 hours later all my flu-like symptoms were gone. Would over doing it have caused this to happen? I asked my dr about it and she said it was my body's way of resetting itself after sensing something was off. Has anyone ever had this happen or ever heard of such a thing? Would and ESI had anything to do with this if the injection had been 3 weeks earlier? I do know this sounds crazy but it has actually happened to me and I'm just curious if anyone else has ever had this happen or what it could be.