I am 5 weeks out from RUQ lobectomy, my cough is improving, but very similar to what you describe. Exertion, talking and the spirometer all bring on a bout of coughs. The main encouragement I can offer you, is that I see a small improvement every day and am able to do more each day. I am now able to walk my dogs (slowly and carefully), do my morning yoga, evening stationary bike.... there is light at the end of this tunnel. Prayers to you.