I had this pains very regularly since feb 22nd I went to ER they took my ECG, 2 d echo, troponin, chest xray, blood reports everything came normal but this pain sometimes comes and goes like sharp and also i have pins and needles nowdays , and chest spasms whenever I yawn I get that spasm in my left chest nd right both, do I need to get TMT ? Because am so much worried and ANXIOUS and sometimes left arm also pains , my oxygen just i checked few mins back it was showing 94 and 91 and then 98 finally should i beleive the values of pulse oximeter please help me is it heart related ? Anxiety? Musculoskeletal? Or nerve compression?