Hi i donot feel it is related to heart , i feel you might having respiratory tract infection which causing shortness of breath and dry cough , please consult your family physician and follow his advice . and for future i would like to suggest you some life style modification reduce your weight , eat healthy food Take good quantity of fresh fruits, fresh green leafy vegetables, pulses, legumes, nuts like almond, wall nut, soybeans, lentils. - Take whole grain food like brown bread, brown rice, whole wheat, oatmeal, popcorn, seafood like sea fish salmon, tuna, sardine, meat like chicken without skin, lean poultry etc. - Avoid saturated food item like fried food, ghee, butter, red meat, organ meat like liver, kidney and seafood like prawns, crabs, egg yellow if you are non-vegetarian. - avoid bakery items, fried food, sweets, and ice cream. - Take low fat dairy foods like skimmed milk, low fat yogurt, and low fat cheese. -regular walking will help you in controlling your high cholesterol level take care