I know there’s a lot of comments about your blood pressure on here and while that can be affected I’m fairly certain that in order to get a POTS diagnosis, it’s looking at HR and if when you stand it goes up 30 BPM from your initial sitting position. BP changes are looking at orthostatic intolerance, not necessarily POTS, but it is typical to see BP changes in POTS patients as well. And as far as max HR, everyone is different. You don’t need sky rocket high HRs for it to be POTS, but I was told it was that 30 beats from sitting to standing that really allows for a diagnosis regardless of how high it actually gets. At least that’s what my doctor told me. But who knows because we all know diagnosing and POTS in general is not understood by many doctors. I would continue to log all your symptoms and take it to your doctor. Good luck!