Hi Cedriccheah,
I am having the same problem as you since CNY, coughing and taking lots of cough medicine and antibiotics but still the same.
After that decided to see Dr Gan in Mac 2013 to check on my throat but he check my nose for sinus problem.
He suggest that I go for FESS surgery. I agree to go for it because I thought it will solve my problem fast.

After for a month after the FESS surgery,I have the same problem back again and he suggested a revised surgery to rectify the
problem caused by scarred tissue. He said this surgery will definitely rectify my problem.
After the 2nd surgery, I feel better then the 1st because my ear is not block and my cough is better until now.
But mucus still flow down my throat and have to blow my nose quite often to clear it. Went back to see him again and he suggested
Balloon sinuplasty surgery. After reading what you have gone through and not getting well, I decided not to go for it.
It's about a month after the 2nd surgery, I still goes back weekly to clear mucus in my nose.
I am still hoping time will cure my throat and mucus will stop flowing then I will be well again.

How are you getting on since Dec 2012 until now? Hope you can give me some advise for my next step. Tq