Hi thanks for contacting HCM... Here first get your respiratory esmunation with auscultation.... If rhonchi heard then bronchiolitis or COPD or asthma can lead dyspnea.... Investigated with x ray and pulmonary function test.... For lower respiratory infection antibiotic given.... If dyspnea is by bronchoconstriction then bronchodilator might given.... Avoid smoking.... Keep exposure to environmental pollution less..... Get your blood pressure measurement.... Here as you have dyspnea on exertion I would suggest to rule out cardiac cause like heart failure by....... ECG And 2D ECHO.... If suspected pulmonary edema also has to be ruled out...... Hope your concern solved. Take care....