ECG came abnormal but echo and tmt norma

I was on eliwel 10mg since last 20 days for nerve pain and suddenly I developed rapid heart beat with chest pain(pain intensity was 7 out of 10) on October 1st. I went to doctor that day and at doctors clinic, my heart beat was rapidly fluctuating from 60s to 110. He gave me nebicard 5mg. Also he asked me for ecg and echo. ECG report was abnormal but echo was normal. Doctor told me nothing to worry.But my chest pain stayed for 3-4 days and even shortness of breath was there. I myself took decision to discontinue the medicine Eliwel and my symptoms has improved but not gone completely. I still have slight chest pain(may be 4 out of 10). I met a Cardiologist yesterday. He got tmt done and that also came normal but in tmt report also ecg was abnormal. I have attached my ecgs and tmt  report. Plz suggest if there is anything to worry.