I HAD the same thing. I got rid of it with some Chinese Mediciine Tea called Ban Lan Gen. 15 Mg. bag 3 times a day for about 4-5 days. Then I switched to another Chinese Tea but it is not as much a medicine tea but for flu symptoms (says "For Curing Cough" on the bag), and I had that for about 3 days. The scary chect congested cough is gone. Ocassional phlegm but seems likenormal now.
i have had the same symptoms for ten months. xrays, antibiotics. nasal sprays, and anti accid tablets, but no benefits. because of my wheezing with it, i was diognosed with asthma, but still have the cough and cataarh. waiting to see doctor again.
forgot to add i don't smoke, but am around it sometimes.