Hello, I have been feeling under the weather for a while now. Since yesterday, I went to sleep after my throat was dry, no matter how much water I drank. About in 5 in the morning, I woke up feeling hot, sweaty, and cold at the same time. After taking some medicine I slept until 4 in the afternoon. I drank a lot of tea, and didn t eat fatty foods. Every time I moved there was a killer headache, and I was coughing a lot. What does this mean?