EXACT same situation. I’ll never forget the time I felt a murmur and several seconds later I was panicking. This was before I was diagnosed so I legitimately thought I was having a heart attack. I wasn’t even worried about the murmur, in between those seconds I was thinking “huh, that was weird.” And then wam, slammed with adrenaline. I had never even had panic attacks before…

I went to the doc, and he recognized the symptoms as a panic attack. I told the doc “no, you’re not listening. I have zero anxiety in my life right now.” Several dozen attacks later and a doctor that didn’t try to gaslight me into having an anxiety disorder, we found the heart problem.

Fun times.