Thanks for your question on HCM.
I can understand your situation and problem.
Since your cardiac issues have been ruled out, I think you are having GERD (
Gastro Esophageal Reflux Disease ) mostly as a cause for your symptoms.
It is due to laxity of gastroesophageal sphincter.
Because of this the acid of the stomach tends to come up in the
esophagus and cause the symptoms.
Try to follow these steps for better symptomatic relief.
1. Avoid hot and spicy food.
2. Avoid large meals, instead take frequent small meals.
3. Avoid stress and
anxiety.
4. Start
proton pump inhibitor.
5. Go for walk after meals.
6. Keep 2 - 3 pillows under head in the bed.
7. Avoid
smoking and alcohol if you have this habit.
8. Loose weight if you are obese.