I’m very sorry that you’re having such a difficult time, I was curious if you ever had covid…I ask because I had the same symptoms for two years after a covid infection. I found many people who had the same problem but all of them had been infected at some time. I know how stressful it is to feel your heart rate going up and getting tested only to hear that there’s nothing wrong, on a positive note it’s good news but what is going on. I hope that you find the answer to your concerns and continue to get some well deserved help with this situation.