Side chest pain when I get hyped up/emotional?

I have a pain on my left side of my chest, under my underarm and it seems to only happen when I get really amped up or emotional. Is this anxiety or could it be heart related? I got an EKG and chest X-ray done about a month ago and it was okay. Any ideas?

Chest pain is a symptom of an anxiety attack.

Many people mistake anxiety attacks for heart attacks. If your chest X-ray and EKG turned out fine, you shouldn’t worry. It just sounds like anxiety to me.

Anxiety and Panic Related Chest Pains