Had Positive Stress Test For Induced Ischemia. Can I Postpone Angiogram?

Dear Dr. Prabhakar Koregol, I am 55, male, 165cm, 72kg. Exercise (cardio & resistance training) 5/7 equivalent to running/jogging 10km/day. Resting Heart Rate: 58 - 60. BP: 115/70. Lipid Profile: Normal. RBS: 4.7 mmol/litre. Family history: Mom died of MI at 72 y.o. I want to do Half-marathons but need to see if my heart can keep up. During my regular exercise, I noticed irregular hear beats (checking my own pulse ) during rest period after completing HIIT protocol (30 sec max, 90 sec recovery, Repeat 8 times) but NO chest pains or other discomfort experienced. I do not experience these symptoms during recovery if my training interval is long, i.e. greater than 40 - 120 mins and body is properly warmed up. Just completed a heart screening program and the doctor asked if I would like to see a cardiologist (angiogram needed?) due to Positive Stress Test for Induced Ischemia but I need some time. I would truly appreciate your comments. Stress ECG: Rest 1 Standing, Normal sinus rythm within normal limits. Achieved THR of 165 (100%) at end of Stage 5 of Bruce Protocol. ST drpressions noted in multiple leads - infero -lateral Also noted ectopics - VPCs APCs (only during recovery, up to recovery Stage 3, then spontaneously resolved) No Chest Discomfort, No Chest Pain Positive Stress Test for Inducable Ischaemia ECHO Report: Normal cardiac chambers sizes Mild LVH No Regional wall motion abnormalities Normal LV function. LVEF = 58% Mild MR seen, otherwise other valves are normal morphology Normal abdorminal aorta morphology and flow Normal carotid arteries morphology and flow