Long Covid

Has anyone had experience with Long Covid. I finished with a severe 5 week bout of the new non-fatal Covid about a month ago. I'm left with fatigue, joint pain, a new much faster heart rate (85 bpm was 55), and a bunch of other stuff that I've had before but fits the dx for Long Covid.
Cardiologist is good, but too busy to see me. Urgent care will say go to ER. PCP will refer me to cardiologist🤷 who said go to ER.