Back in July, I got really cold, could not get warm, wound up in emergency room with pneumonia. totally out of it for 2 days, then in intensive care for 5 days. had ecoli among other things. I have a lot of chills, mostly in my back. just cannot get warm. I know my age has a lot to do with it, but just wondering if that's a sign of pneumonia, to be so cold all the time.