Hello again everyone. So I have not been able to stop checking my pulse due to my fear or cardiac-related health problems. I had a few palpitations here and there and cannot stop feeling my carotid pulse (never really my radial pulse). I have a pulse oximeter from when I was taking classes to become an EMT (yes, I guess these classes could've triggered my anxiety). Anyway, I've gotten into the habit of using it to check my SPO2 and pulse consistently and now I have become wary of my pulse, which in turn causes it to go up and it's a never-ending cycle. And, when I see my SPO2 go from a 99/100 to 97, it freaks me out (which makes no sense really because anything 94 and above is considered A-ok). I just don't understand why at times I forget this and fear the worse. Constantly checking my hands/fingers/lips/tongue for cyanosis. It's frustrating because I know I'm overreacting but at the same time my mind brushes aside all logic and screams at me "WHAT IF..." I wish there was a way to end HA once and for all.