Welcome to healthcaremagic.com. Sorry to read about your health scare. It would seem that you have angina/pain on exertion. Do not worry too much about this, the stress test will e able to tell us if you have low oxygen supply to your heart and if that s the case, there are therapies medical or surgical that can be performed to remedy this. I know at your young age this sounds scary, but it is better to find out early on than be the young guy with say a heart attack you know? Meanwhile if you eat poorly, you may want to change to a better diet habit and limit alcohol consumption of you take any, and quit tobacco if you smoke. I am not lecturing you, I am giving you tips to change that historically have contributed to heart disease. I hope this answers your question. Good luck.