@Glow Tachycardia simply means rapid pulse. Tachycardia comes from the Greek words tachys (rapid or accelerated) and kardia (of the heart). (yes, I am being lazy… that is wiki). Tachycardia is a symptom of a disorder, not a disorder itself.
I definitely understand about being tired of doctors. Seeing a doctor more than a couple of times a year constitutes going to the doctor too much for my preference. I am only slightly joking when I say “I will only go to the doctor over my cold, dead corpse!”
Try to not put it off too far and, if you experience any chest pains, tightening, or anything concerning, go to the ER, not wait for your doctor. If your pulse jumps, go to the ER. Cardiac issues are not to be played with.
As I said, this could be nothing harmful, like it is with me. However, I am lucky. Tachycardia can be a symptom of many very dangerous conditions.
I also white out sometimes when I go from sitting to standing. When I do it I say that I “left my blood pressure in the chair.” I have been told that it is due to my normally low BP and, for me, it is nothing to be concerned about.
However, it is something you should mention when you see the doctor for the tachycardia.
Good luck to you and please be careful!