Please consult your nearst doctor for a detailed examination.

ECG and ECHO if normal doesn't require any further testing as there's no danger signs noted in the ECG which requires further examination. But further tests of the heart is a TMT(treadmill test) used to find stress induced ischemia, angiography to find the status of the arteries and the level of blockage, MRI scans and Thallium scans. You can do a TMT test as well to confirm the status of the heart but if the ECHO, ECG and TMT is normal then further testing isn't required.