I had similar symptoms this past two weeks. The doc said sinusitis. Rx for amoxclav cough syrup, and the true god send for me, the 12 hour time released musinex! After a few days on the musinex, I felt almost back to normal. The congestion in my chest and post nasal was pretty much gone. Could not take the antibiotic, and did not need the cough syrup after the mucus loosened. Good luck! I felt miserable too. Hope this helps and you are on your way to a speedy recovery!