Heart disease. This last chest pain!

My grandfather had 2 brother one lived 85+ , one died <40 of heart attack and mine grandfather died in army, but the grandfather that died of heart attack his son also died yesterday of yes herat attack he was only son, rest brother of my father had no heart conditions whatsoever my father had no condition he is a fairly healthy person, even at 55 he has completed multiple 5k marathon, but he was diagnosed with high cholesterol back 15 years or so , he is a M.D himself, plus i had chest pain around 25 may it wasnot cardiac defo had ecg,2d,xray,troponin,etc but found out i had high cholesterol, and again on 20 july i had similar chest pain and again i had ecg which came sinus rhythm and normal ecg so is this much test enough to rule out my this recent chest pain as non cardiac or looking at history of my family although he is not directly related but he was blood relative and died of heart attack at 38 should i get more test done for just this test to rule out just this last chest pain