wha happwned, sorry you've been having a rough time. It looks like what you just described is "rigors." I have seen patients suffer from the rigors and they shake so hard that they nearly jump out of the bed. It is terrifying. We call it "shake and bake." We usually give demerol iv to stop them. You must have had a bad flu. I have seen rigors brought on by certain antibiotics, but infection can bring rigors on. Take care of yourself; the flu can be serious. Stop being macho and get some rest.
PHG