I am having frequent left chest pain – echo,stress test,ECG all normal?

I am having frequent left chest pain Jst like a finger pushing through which lasts for a second or 2 seconds these are from 2 months recently my arm is also having pain ..I met cardiologists they took my echo,stress test,ECG which all came normal ….BT all my ecgs are saying slight ST elevation (V4) BT doctors said that is normal cause all ecgs are having same reading ..Is this right ?? I am 21 years male