I Had An EKG Test Performed, And When I Reviewed

I had an EKG test performed, and when I reviewed the results with Dr today, she checked the results against a precious EKG from 2010 and noted non-conclusive changed. I have been aware that I had a heart murmur as a child, and my father has a history of heart attacks (x2) and arrhythmia. I'm being scheduled for a stress test in the coming weeks. What type of questions should I be asking? Thanks.