Chest pain like punching with needle.

Hi doctor, In December 2017, i had normal pain in heart,then i went to hospital and they took ECG,2D ECHO and said its because of acidity...i used tablets for few days and stopped and then i went to another hospital...they did ECG,2D ECHO,TMT...i had my TMT exactly one year back...it is negative..the doctor said everything is normal and didnt prescribe me any tablets..but asked me to do yoga and meditation.Then recently in january 2019 i felt some pain in chest and went to cardiology hosp..then they did test for ECG and 2D ECHO and said there is no issue..and gave me tablets for acidity..but from last 15 days...I am having sharp pain in my heart that comes and go...which lasts for 1-2 seconds..even last day in the morning i had this sharp pain in heart and below left ribs..I was soo worried that it might be pain because of heart. daily i am having this fear of heart attack...is that sharp pain really because of acidity doctor?..i am attaching ECG and 2D ECHO of jan 2019 doctor