Don’t worry Joey2423. A pulmonary embolism was pretty much ruled out almost straight away. Trouble with these illnesses they can be great mimickers of serious or life threatening illnesses, always best to air on the side of caution and not always assume that every symptom you have is as a consequence of POTS etc… I hadn’t even heard of POTS, and only vaguely dysautonomia when I first got sick in december, and as I had just got off a plane to Australia from UK, pulmonary embolus was at the forefront of my mind. Thanks for your concern though….