35 m with normal echo stress in jan, normal bp and chol no family his non smoker sob when carrying heavy suitcase upstairs. have reflux, out of shape?

Likely out of shape: If your Stress Echo was normal only 10 months ago it is unlikely that your symptoms are cardiac in nature. In addition you don't seem to have risk factors. Most likely you are just out of shape. If symptoms persist despite routine exercise, ask for a reevaluation by your health care provider.

Shortness of Breath: I commend you for not smoking, having normal Cholesterol and Blood Pressure, and normal Stress Echo. Being out of shape, obesity, overexerting, and trying to impress can cause shortness of breath when carrying heavy suitcases upstairs. See a Physician for airway obstruction, Asthma. Allergies and Pneumonia. See a Psychiatrist for diagnosis of y Anxiety and Panic disorder and Therapy for stress