Hello dear, thanks for your question on HCM.
I can understand your situation and problem.
In my opinion, we need to rule out 2 conditions in your case.
1. Bronchitis
2.
Lung infection (
pneumonia ).
In both these conditions,
cough with yellowish expectoration and
chest pain are seen. Breathing difficulty is more seen in bronchitis.
So better to
consult pulmonologist and get done
1. Clinical examination of respiratory system.
2. Chest x ray
3. PFT ( pulmonary function test ).
Chest x ray is needed to rule out lung infection ( pneumonia ).
PFT is needed to diagnose bronchitis.
You may need inhaled bronchodilators and antibiotic.
So consult pulmonologist and first diagnose yourself and then start appropriate treatment.