Because your father died young from a heart attack you and your family are at risk for having the same in the future. We don't know what the risk is, but generally, we recommend that you start as early as possible with primary prevention. That means not smoking, eating well, exercising, avoiding stressful situations, losing weight, controlling blood pressure and diabetes. There are some things in the blood that we can test for. Your doctor can help you with that. I would get a cholesterol profile, CRT and Lpa checked first.
You are certainly at risk because of your family history. Go see a Cardiologist or a family doctor.Get your cholesterol and other blood work done and checked. It is a simple blood test with fasting. Simple tests, medication and life style will prolong your life.