I have severe shortness of breath with mild exercise such as walking. I also sweat profusely and I have a cough that produces a clear sputum. However, I can sit or lie down and am normal within minutes. I had a double by-pass surgery 6 months ago, but this condition has just occurred within the past 3 months.
Hello, A lung disorder cannot be excluded either. For this reason, I recommend consulting with your attending physician for a physical exam and performing a cardiac ultrasound, a chest X-ray study and NT pro BNP values for possible heart failure. A chest Anglo CT scan may be needed in case of suspicions on pulmonary embolism.  In the case of heart failure, starting a diuretic may be needed.  Hope I have answered your query. Let me know if I can assist you further.