Very High heart beats with pain in chest

Dear sir, since more than a year I have occasional issues is very high heart beats where shoulder too would feel the pain in addition to chest. This lasts for around 10 minutes post which things start to get normal. But need to take rest to get that pain in chest and let shoulder and pounding feeling of that high heart beats go away. During consultation with doctor I was told that it could be PSVT, but works require ECG of that time to have better understanding. Couple of days back i had that issue, when I used the apple watch of my friend to have atleast 1 lead ecg, as it's not possible for me to get a professional ecg in hospital that limited period of 10 to 15 minutes. I am attaching 4 ECGs during that period, require your help to understand what could be the underlying reason for such events. Pl ignore the name in ECG sheet as it shows name is the person whose watch i had used. Regards Jinay