Dear Mr Luke,
Welcome to Health Care Magic
Absence of pain is no proof of absence of disease.
The next step is stress test
. TMT (Treadmill Exercise ECG) / preferably with thallium isotope / will be the ideal way to evaluate ischemia
. This is to assess the physiology (function).
If there is a suggestion, the next step is to see the anatomy. You ought to undergo catheterisation and coronary angiography
with a view for possible intervention. Coronary arteriography is invasive but it is the gold standard for this.
You should check your lipids
You BP needs strict control
You weight must be reduced
Wishing speedy recovery