I'm really worried because I've been having chest pain for a few weeks now. Sometimes it spreads to my left arm and upper back, which is really scary. I've noticed that my heart's been beating really fast a couple of times this month, and when that happens, I start sweating and feel hot all over. I actually thought I might be having a heart attack. I went ahead and had an ECG done, and it says sinus tachycardia and nonspecific t abnormalities in the inferior leads. Should I be concerned about this? Also, I've taken medication for depression beforecould that be connected somehow?