Hi dear. I am your physician and I have vast experience in Ottorhinolaryngology helping Outpatient and Inpatient and Surgical cases. Well I know whats going on there inside your body. Obesity is the mother of all diseases. And what happens is your lungs and muscles helping in breathing are not able to work normal if your BMI is high and you are obese. Especially Central Truncal obesity is the worst one. Also you may have some Valvular heart disease that may need attention. So please go to your Cardiologist for specialist consultation.your cardiologist may take Exercise Stress test or Thallium scan and coronary Angiography to look, are your cardiac vessels patent ? If blockade on them , He can tell you what to do. May be angioplasty. Try to lose weight and do exercise regularly. There may be some anemia that may cause Short of breath to you. Also Pulmonary Hypertension causes Shortness of breath. Your physician will check Pulmonary artery wedge pressure and tell you whats going on with pulmonary pressure inside lungs.