question: i have had low fever for the past two days. my back has been aching since. i developed a slight cough today. my head aches whenever i sit up or stand - it goes from the front of the forehead to the back of the neck. i also feel chilly and my body hurts just with the wind blowing at me. i also have an upset stomach - i have not pooped for the past 2 days and there is lots of gas. it makes me nauseous. sometimes there would be a sharp pain just below the gastric. please help