Confused

I have a little bit of a problem. About 5 days ago I had started feel nauseous for no reason. My husband and I have been trying to get pregnant for almost two years. Then 6 days before my period was due I couldn’t drink coffee because I was gagging, can’t stand the smell of smoke and I use to be a smoker. Garlic and lots of other food is smelling wrong. I have no appetite. Then 4 days until my period and I believe I have started. Bleeding enough that I need tampons. But my temperature is still high and I still have the same smelling issues. I’m getting more nauseous as the days go by. Any advice or ideas of what’s going on?