Scared And It's Stupid

In october my first boyfriend's little brother *nearly 20 years old* died of a massive heart attack due to an enlarged heart. No one had a clue he had that. I knew him well and being nearly 21 this hit me hard. Also he is the cloest person to me to ever die.

A couple months later I had some nasty pains on the left side of my chest. The er said it was just anxiety but my family doc said I hurt the muscle and to take motrin.

That was few months ago and the pain is almost always with me. Some times more then others.

Am I just paranoid because of what happened to gary? Or could this be something serious?

Btw I am taking an all natural suppliment called relora on a daily basis and it helps alot with my anxiety. So anotehr reason why I doubt this is anxiety.