Dear doctors, I have few questions relative to heart condition: 1. How accurate/ close is ecg diagnosing heart issues and probable heart attack in near future 2. A person with no history of high bp and sugar with normal ecg can develop heart issues suddenly 3. Does being constantly worried and stressed about heart issues can get you into cardio vascular diseases 4. If a person has undergone 2d echo and tmt with normal result still need the tests after 2 years am 46 years male with 78 kgs and 5'11" height with no diagnose bp/ sugar have done multiple eggs in last 1-2 years, all normal. But I always have a weird feeling around my left shoulder n arm n neck please guide.