first set up an appointment with your doctor and ask them if there are any changes in medication that could be made to decrease your symptoms. also look on the internet or call the hospitals in your area and see if any offer cardiac rehabilitation. with your medical history this would be the best place for you to exercise. in addition they could also help you with your weight loss efforts. i've pasted a link below that you can click on that describes cardiac rehabilitation. heart failure and cardiac rehabilitation
i am 52 with high blood pressure asthma & congested heart failure my meds makes me sleepy \ tired need to loose weight. i can't seem to stay focused