[Jayschwa]

It might be worth going to a gastroenterologist to check on acid reflux. I was in a similar boat a couple years ago. Sharp chest pains out of nowhere. Heart stuff was ruled out by a cardiologist. I then had an endoscopy which confirmed something was out of whack with the sphincter between my esophagus and stomach, causing strong heartburn. After taking some heavy acid reducers for a few months, it managed to heal up and has been fine ever since. I can relate to the anxiety though. It was pretty intense at times and I had trouble sleeping or focusing on anything else. Hang in there.