Hi! I was recently fine in the morning, happy and querky and all and towards the late evening to night I start to feel cold. I threw over a blanket and started to sweat and get warmish-hot. After that, I ate some dishes and a banana. After eating the banana, I started to feel nauseous and my symptoms right now include nausea, tired/weak, maybe still a little chilly but only when I drink a cold drink and hot. My temperatures are 97.1's - 97.7's. What am I having?