I am so sorry you had to go through that! I'm going through the same. I have to keep reminding myself that I've had two nationally accredited cardiologists tell me that this isn't cardiac and that I have a fantastic heart, because sometimes I get so scared. It causes me a ton of anxiety too, I'm assuming that's normal. I hate the vision changes, and I also hate the light headedness and chest tightness the most.
I am Allie by the way, it is nice to meet you.