Thanks for the update. I wasn't familiar with your story, but I read the previous posts and got up to speed. I can really relate to your struggles, even down to the D.C. flight (mine is coming up this fall, I've already got an Ativan prescription ready to go
). I still wake up in the night with pounding heartbeats, shortness of breath....all that. What I've learned to do is tell myself, "Well, this is that same anxiety beast that's plaguing me. They are symptoms only, not indicative of anything wrong other than anxiety." Truth be told, that anxiety energy will find a way out, whether that's through laughing, crying, stressing, muscle aches, headaches, nausea, twitching, heart palpitations, etc. We are like sponges that can only hold 'so much' and after that point we start to leak. They key for me has been identifying the beast and learning how to work with it's symptoms.
I have had many tests on my heart. EKG's, blood work, echocardiograms, stress tests, 30-day event monitors. It all checks out. I will say that I was first diagnosed with atrial fibrillation about 20 years ago. I've had my heart go into "afib" twice, and let me tell you, there's no mistaking when it does. It's not subtle, there's no wondering, "Am I in afib or not?" Meaning, even though your situation makes you feel like you're dying, you're not. The reason I'm telling you this is that simply having a fast heartbeat does not indicate trouble (as long as you've been cleared otherwise) and even IF something were to be found, it doesn't mean it's going to kill you.