I have been sick for going on 4 weeks now. I have had bad chest congestion, coughing, now it has gone to my nasal passages. I have taken allegra, Flonase, naproxen and Nyquil. I can t seem to shake whatever it is. The coughing is better and the flem is becoming clearer, but I still cannot lay down without coughing fits and a very stuffed up nose. What can I do to help.