My ECG, TMT and CK-MB are perfectly normal. I have anxiety issues, and taking medication for that, . I am 21 years old, female. I have a pretty healthy lifestyle. I eat well. But at times, when I feel anxious, my left arm starts aching, my shoulder or even my neck at times, I feel breathless, chest pain is there which is on any side, left, middle or right. There is chest tightness, nausea at times, light-headedness, numb feeling in feet and fatigue. Are these due to anxiety? Or symptoms of heart attack?