Any clue

Well lately I've been hot but when my SO touches me he says I'm cold. But i feel like the heat is on(we have heaters but rarely use them) and my own touch is hot. I've been achy in my back and having headaches. Nauseated everyday and metal in my mouth. My So taste it and said tonight he smelled it. I brush my teeth like crazy cause my mother drilled it in my head as a kid you need to breath at least 3 tomes a day. And mouth wash is a must. Has any one had these problems? Yes I'm going to make a Dr appt but just wanted to know that I'm not alone with these symptoms.