There are many risk factors that lead to heart disease... some are under your control, others are not. Family history is obviously something you cannot control.
But others are such as smoking, reducing stress, diet, getting adequate exercise, body weight.
Some lifestyle changes may save you from some serious trouble down the road! The effect of these risk factors is cumulative.
For some ideas, suggestions and information on living a heart healthy lifestyle, see http://www.smart-heart-living.com/index.html
There are pages about chest pain, blood pressure, stress, diet, exercise, smoking, etc.
The changes you make today will have an impact on your future health!
Good luck!