Your heart symptoms - chest pain, chest pressure, shortness of breath, nausea, heart racing - all sounds like symptoms of coronary spasms. Do you have a Mayo cardiologist? Is highly recommend it. Even if - especially if - you've had an angiogram that showed no blocked arteries, spasms may be cutting off oxygen to your heart. And many cardiologists (and especially ER docs) aren't familiar with ANOCA (Angina with Non-Obstructed Coronary Arteries). Might be worth talking to your doctor about . . .