Thank you all! Well, I had to go back two days ago, because it got really bad. They checked my heart again, nothing. Then the doctor said we'll try a different anti-anxiety medication, since the Ativan the week before didn't do anything, and then we'd go from there. They gave me a Xanax, and about 30 minutes later I could breathe again. The dizziness went away, and all the other symptoms too. I'm still going to see a Cardiologist, just to be on the safe side. But I'm completely floored. I would have never thought I have anxiety. And for that long?? I don't feel anxious either. So weird.
So, they gave me some Xanax and sent me home. So far I haven't needed any.
This is just all so strange.