Hello dear, thanks for your question on HCM.
I can understand your situation and problem.
Since your extensive pulmonary work up is normal, no need to worry for pulmonary causes.
Uncontrolled
acid reflux disease can cause
chronic cough.
And for proper control of acid rrflux, you need to follow these lifestyle modifications along with drugs.
1. Avoid hot and spicy food.
2. Avoid
stress and tension.
3. Avoid large meals, instead take frequent small meals.
4. Go for walk after meals.
5. Keep 2 - 3 pillows under head in bed.
6. Avoid alcohol and
smoking, if you have these habits.
7. Loose weight if you are having obesity.
Don't worry, you will be alright.