As per ecg there is no flat T wave as ecg sees the potential difference so it might be some machine error non significant though. So sir according to your ecg there is nothing to worry. If still you are having any light heaviness, any breathlessness on walking and doing normal work, any headache or any other symptoms you can consult me online.
Next Steps
Monitor your BP, spo2, pulse and any pain
Health Tips
Healthy diet non fried foods, no smoking and drinking if any of my mention symptoms appear