I have on and off cough from past few weeks. Docs did chest x-ray and found some infection like patches on right lung. Covid test came negative and after having amoxcillin, montelukast, clarithromycin for 5 day and Allegra-m and abphyllin SR for another 7 days, 2nd x-ray appears normal as per doctor and mentioned in radiology report. I still having coughing issue on some days with chest congestion with white phlegm (sometimes frothy and sometimes mucus). Some days the problem is less. Doctor asked to continue Allegra and abphyllin for 3 more weeks. I m worried, what should I do? Is nebulizer recommended?