All I can say is don't be discouraged you will find a combination that will at least reduce some of your symptoms. Also don't think that you can't try medication before seeing if PT helps you. For a lot of people their pots is just too bad for them to be able to start the cardio protocols. For me I started at a higher medication dose and did water therapy that allowed me to start exercising. Then as I got stronger I was able to transition to lower medication doses and more cardio at home. Its not like all of these treatments exist in isolation, for most people they need to do 3 or 4 of them that each help a little in order to reduce your symptoms to a functional level. Good luck on your journey.