Hi. I had what seemed like a sinus/chest cold for 6 days and all of a sudden it became the flu. I am now on day 4 of the flu. My body heat seems to fluctuate and I'm having more coughing fits and mucus production. The last two nights I woke up and could barely breath out of my nose. I'm suspicious I might have bronchitis. I also have been having headaches today. Should I go to a clinic?