Need your suggestions. Anything serious?

Hi, I am feeling left chest pain for last 3 days with that sometimes fell short of breath and pain in left hand. This pain has increased when yesterday I was doing Anulom vilom after kapalbhati which I did always at morning with lungs physiotherapy exercise for 10-15 mins al together. Daily I walk 12 -13 kms at a avg speed of 5.5km/hr. I am non smoker and non alcoholic and mostly have veg diet with less masala and oil. My height 175 cm and weight is 86kgs. I am not on any medicine. Yesterday when pain increased I had gone through ECG which I have attached. 2 months bck as per regular checkup with consult with doctor I had gone through ECG and ECHO which I do every year. Somehow I lost ECG report but have ECHO report which I have attached. 2 months bck I had Lips profile, CBC, glucose, liver kidney profile, cpk, cpk-mb, HsCRP, vit12 and D. Al came absolute normal. Plz chk my yesterday's ECG report and 2 months bck ECHO and let me know whether it's muscle pain or anything serious ?