one week of cough with rheum (catarrh) every time I start to speak.
I do not smoking now or in the past. Covid is negative. I need a medical visit. Any good specialist in PTT ?

Sounds like Amoxicillin will do the trick. Go to Fascino and see the pharmacist

Just go to the hospital and see a doctor.. or look up Doctor Oliver. 

At the expensive Bangkok Hospital Pattaya you should go directly to a specialist....

I am into my 4th week suffering from Bronchitis , which I picked up in Australia or more likely on the numerous flights I had - 12 take offs and landings.

Started with Nurofen and have since been on Amoxicillin - But still no improvement.

I am concerned that the covid vaccinations have weakened my immune system   

Air quality is bad this time of year... are you particularly susceptible?

I don't think so .

I have never smoked and live in Naklua -so I get sea breeze all day

i have stopped having my A/C on , as I find that seems to worsen the cough frequency

I have had 3 bouts of coughing in the last year. Antibiotics don't help. Covid PCR is negative. 

 

The first 2 rounds took about 10 days to go away, followed by a brief cold. 

 

This round has been going on for 10 days, still going strong. I get a persistent cough attack that lasts 10 or 15 minutes a few times a day; otherwise, it's just a single cough every few minutes.