The pain you described lasting for seconds is unlikely related to cardiac issues.Any significant pain lasts for minutes and hours.
You wrote your ECG and echo are normal.
Next Steps
Since you are an IT professional ,I assume you have an desc job .
Try getting your blood investigation that includes
lipid profile glucose renal profile
liver function test
Health Tips
Do yoga, exercise for 30 minutes a day and diet modification
getting a sound sleep is essential