Feeling like take a deep breath often.

Hello,Am freling like taking a deep breathe iften atleast once in a min.A transperant phlyum and occasional cough is observed since one week.As per dics advise am using Foracort 200 since a week 2times a day, Muciane 600 onve a day, Cepodem XP 325 twice a day and Montek LC once a day but dont see any changes since 5 days. I also feel low bp i.e: dizzy when i get up and stand,feeling heavy or tight on chest and occasional weezing sound can be heard. Took an xray but came notmal,I have no cold,No fever./chils,No blocks in nose or running nose.With above symptoms please suggest what tests to be done.Unable to find a pulmonologist in my area due to lockdown,any guidance is highly appreciated.