If anyone experience symptoms, better do CT scan for heart . Sometimes ECG can't check much. I myself knew I have mild issue in my valve issue but ECG always showed reading ok. But chest always feel tight whenever i run . Last time during school days, couldn complete 2.4km as chest in tight n breathless. pE teach always forced me to run and my chest felt even tighter. Now I knew the reason why after consulting a cardiologist
Good that you found out. Take care of health. People with heart problems (i.e. valve, hole, chamber, ventricular) cannot overwork. Feeling tired easily is a symptom. I used to have a good friend who was in the clerk vocation (while I was in combat vocation) during my NSF days. When my platoon went for BBQ at East Coast Park we invited him because his personality's quite cool and funny. When we took off our shirts to go into the water, we were shocked to see that he had a big surgery scar on his chest - a vertical line down the centre. I said, "Wtf... What happened to you?" All of us were stunned. "We swim later", I said, and we sat down and ate and drank and listened to his story. The surgery was to patch a hole in his heart (found out during poly time because he kept feeling tired and breathless while running). The doc told him in layman terms, we are going to stop your heart, put you on the artificial heart machine, then we take out the heart, patch the hole, and put it back. After hearing that he couldn't sleep well for days. Imagine a 17 year old boy having to go through this. If anything bad happened he could die on the surgery bed. Therefore after the surgery and he got well again, his mindset and personality changed. I have not contacted him for a while now, same age as me 52yo, last saw him in Bugis when he was shopping with his wife and kids. We went for coffee at Sim Lim Sq basement, wow found out he's an architect. Then I recalled he studied architecture diploma back then. So after NSF he went to Scotland to get an architecture degree. Then drove me to the MRT station in his large BMW and before I got down he passed me his namecard - now a boss already.
Well sometimes in life there is a certain aspect of luck in it. After you go through a large barrier in life, you won't know, a new prosperous life awaits you. You have to see positive.