We've had a weird viral thing through our house the last 7 days & I had it for 4, during it I would have chills and be feverish and then suddenly I'd feel fine, than a few hours later I would feel sick again. It lasted like that for 4 days with aches & pains as well. Matilda had it for 2 days & was fine after but Jovie's has turned into an upper respiratory viral infection.... A friends family has had it too with the same things...