Hi thanks for asking question. Noted you have breathlessness after exertion. So here first possibility could be early cardiac failure if edema and hypertension like condition present.ECG can be useful.If cardiac failure beginning with hypertension diuretic started. Here asthma or bronchitis like respiratory condition also ruled out.pulmonary function Test helpful in differentiating between restrictive and obstructive pulmonary condition. Check your hemoglobin level also. Anemia can also lead to dyspnea on exertion.if present treated with iron tablet or by vitamin b12 . I hope my suggestion will be helpful to you. Take care.... Dr.Parth Goswami