Past and recent studies indicate that birth control pills appear to be associated with increased levels of a protein linked to heart disease. In one study, young women who took birth control pills had twice as much C-reactive protein in their blood as a similar group of women who did not use birth control pills. C-reactive protein (CRP) is produced in the liver in response to inflammation. Chronically high CRP has been linked to heart disease, and inflammation is believed to play a key role in narrowing and hardening of the arteries. There are a multitude of other risks in taking birth control pills in the healthiest of women. With heart conditions such as yours, complete avoidance is highly recommended. Because of all of the negative effects of the pill (lupus, blog clots [deep vein thrombosis], cervical cancer, folic acid depletion, and many other health problems.), the last thing you need is to impose additional health problem upon your already ailing body. I suggest that you speak with your doctor to determine what other forms of birth control might be available that will post little or no negative effects upon your fragile health. Good luck and please take care of yourself. I wish you all the best.