Lisa, is it always at the same time of the day for you? I feel pretty good in the morning, and coffee doesn't seem to aggravate it. But in the evening is when it starts to act up the most. and then when bedtime rolls around the anxiety is stronger than the tiredness. Also, does it wake you up at all? Ill wake up and be convinced that my heart is stopping. Good luck trying to get back to sleep after that.
The weirdest part to me is that when I am working out or riding the peloton, everything feels great.