Nose was runny and throat was sore. Two days ago, the runny nose stopped and so did the throat soreness, but now I usually have a light fever during the evenings (9-10 pm) and fever of about 37.5 degrees celcius. Also, two days in a row, I have been waking up at about 2 am, sweaty. And I have a light headache during the day, sometimes. What exactly is this sickness? Is there anything that I should worry about? I have been taking cough medicine the past day, it has helped me alot. And I took aspirin, whenever I had somewhat of a fever, during the evenings.