Hello Dr. I have been feeling a weird sensation like pop/ tickle/cold feeling in chest from past few days it is  like a sudden sensation lasts only for that moment. It makes me panic. I have done all my blood works n ecg 15 days back which were all normal but had sinus tachycardia are I was anxious, ECG attached. I get anxious and panicked even for a small pricky pain. Kindly help. Thank you.