Constant wet cough from 1nd half week.

From 2nd week of may cough started. I can't simply sit for five minutes, cough starts. Evening and nite it will be more. Apart from this I stopped outside food, fried food, cold items and sweet. From this cough I can't eat anything. Not like having trouble while eating, if i get hungry not much i can eat. Three times a day same problem. I started loosing my weight like anything. Now I hate any food, including my favourite foods. I have to eat forcefully after some spoons, I feel like I'm full, I can't eat like three to four spoons. And one extra problem is body temperature. I can't maintain temperature constant. When i have my food, and went outside if it is hot, I'll sweat like anything. If I'm at office in centralised A/C i feel like hot, when I enter like I'll not get sweat, after sometimes I feel like cold. My body starts to shivering. And when it is in room temperature it's like hell, I got fever like feeling. No use of local doctors, help me......plz