Trop I negative 2d echo normal ecg check

Actually I had left side chest pain hand and left side pain palpitations and ghbrahat uneasiness so went to the dr he advise a 2d echo which I had done and it shows normal echo dr said it might be costochondritis gave me medicine and it became normal and I had no pain but again this year I again started having pain palpitations and uneasiness ghbrahat dizziness so I went to the dr he said do the ecg so I went quickly to the hospital and without resting done the ecg it showed sinus tachycardia and hyperacute t waves in v2 v3 so I went to the dr again he did a trop I test and I done the test withing half hour of ecg it came negative so I went to the Dr(Mbbs md ccebdm f.c.c.s) he said it is anxiety that's why it happening he gave some medicine like internal 10 and rousamac maxmala 50 as I had ldl 130 total cholesterol 209 please tell me why it showed such hyperacute t waves and tachycardia is it normal i had anxiety duringecgandin practo cardiologist said anxiety(I have hiatus hernia gerd