Thanks for your query.
With the background of COPD, it seems that you have got acute exacerbation of COPD, in which there is increase in baseline breathlessness, cough and sputum production.
The treatment needs oxygen
inhalation, antibiotics, short course of steroid
. The patient needs to be evaluated for cardiac status as well. I think You must visit a chest specialist to get yourself evaluated particularly for the stage of COP you are suffering from and presence of cardiac disease especially cor pulmonale