u/Dysnoitos

I was just wondering if anyone else had this issue?- Whenever I’ll be standing and start to feel pots symptoms I will crouch down so I don’t fall over, however when i crouch I will get very intense palpitations that almost hurt and make me cough and make it hard to breath. These will last for around a minute but they are very uncomfortable. Am I alone in this experience or is this a common thing others experience?