I had something similar in late February as well. All of the symptoms except for a cough, and it lasted two weeks. I've never had a fever for three days solid. It was wild. Never felt like my life was in danger though. I had really bad digestive problems at the beginning, and so when I tested negative for the flu, they told me I probably had a stomach virus. I had chills and night sweats for two weeks on and off. Took me about a month to get back to normal as well.