My father had his heart attack the day before his 49th birthday, so I have tried to do better. I have also had such miserable episodes of acid reflux that I swore I was having a heart attack and went in for testing at Emory and saw an old and maybe retired, doctor named Dr. Williams. One day three years ago he looked at me and asked if I had had a heart scan, it's not covered by my insurance, only cost $100, and I took it that afternoon.
I won the genetic lottery according to the doctor, zero blockages found despite my family history and love of alcohol and red meat. Actually said 0-10% chance of a heart attack, but I could still have one. Get the cardiac calcium scan, exercise and enjoy life. Genetics has more of an influence than anything, so your history says you need to be diligent like I am trying to be.