I have had pots all my life as well, and my episodes didn't become bad until this year and one of the reasons I finally got diagnosed. My symptoms became just like you have explained, and I finally was able to get a diagnosis, but not a treatment plan that works yet. POTS can get worse, and better. Sorry I can't really help with advise, all I wanted to say is I have the same exact symptoms as you and know how you feel.