Cause for sudden nausea?

Question

Suddenly I started feeling nausea during the night after feeling completely fine all day. The feeling didn't let me sleep and I still felt sick in the morning. I don't feel a stomach ache or have diarrhea, just the feeling of nausea. I know I'm not pregnant. so what could be the cause of this?

Answer 1

I JUST GOT OVER THE FLU, WHICH HIT ME SUDDENLY IN THE MIDDLE OF THE NIGHT. I WAS SWEATLY, DIZZY, NAUSEAOUS, AND I SIPPED TEA, AND ATE SALTINES, WATCHING TV ALL DAY ....