Hi doctors I have been experiencing chest pain in left side for six months but for the past 5 days it has been worse i can feel heaviness in chest and pain in left shoulder and sometimes neck I took echo and tmt in December which came out normal and ct angio in March which had calcium score 0 for more clarification I again took ecg echo and tmt day before yesterday which also came normal but this pain frightens me. Please help me with this.