Talk to Cardiologist on Cardiologist

Salam. I want to know about good cardiologost in karachi. M very worried frm last 2 days..i hve seen on fb some young girl died because of cardiac arrest. She look like between 25 to 30 and hve 1 kid. Tb se m very worried. Want to get myself chk frm cardiogst and want to knw detail of cardiac arrest at such young age is it common? Plz hlp me to gt me peace of mind. Shall i go fr ecg and echo?