Thanks for your question on HCM.
I can understand your situation and problem.
Yes,
cough and breathlessness induced vasovegal
syncope can cause similar symptoms like you have.
In my opinion, you are mostly having
bronchitis.
So better to
consult pulmonologist and get done
1. Clinical examination of respiratory system.
2. PFT (Pulmonary Function Test).
PFT is needed to rule out
asthma or bronchitis.
It will also tell you about severity of the disease.
And treatment is based on severity only.
So better to get done PFT.
You may need inhaled bronchodilators and antihistamines drugs.
So consult pulmonologist and first diagnose yourself and then start appropriate treatment.
Don't worry, you will be alright.