Not sure if I have a virus or menopause symptoms, I have nausea, hot and cold and flashes, muscle aches and shakiness. I have felt awful for the last week. I am 50, recently started with hot flashes the last couple of months. My period stopped 2 months ago. I have had severe morning sickness when pregnant with my children years ago and that is what this feels like. I do not have a fever or diarrhea. Can this be hormones changing and what should I do?