Hi I am a 36 year old female and had a heart attack 2 years ago. An ST sag was identified. Angiogram was clear. Before this I walked 5 km per day but developed servere leg pain followed by the attack. Since then I am on calcium blockers and no one can work out the problem. But any excess exertion causes tiredness to such an extent that I am in bed for to days. The walking and almost any other excercise has had to be cut back to prevent rebound exhaustion because I work full time. Help.. No solution. By the way what am I paying for the answer?