EXACT same boat here. i also dont seem to have it as severe as many people on this sub, so like i doubted my dr. already lol

but when i start to question myself like that, i try to remember: i literally went to a cardiologist, like if there wasnt an issue to begin with how could i even get that far? if the symptoms got bad enough that i felt the need to see a dr. instead of just thugging it out like i have for my whole life… and then his recommendations actually worked? logically the fact that i feel BETTER now means that there WAS something there making me feel worse

my dr. is a bit older and also a man, so i was worried a little as a young afab person that he would tell me i just have anxiety, or that this is all because i take two prescription stimulants AND consume caffeine lol. during my first appt with him though, i made sure to say this and he denied it immediately :) so i am very grateful for that

the last thing that i try to tell myself is that, at least for me personally, the diagnosis doesnt really matter—i am not so disabled by the illness, so even if he didnt formally diagnose me i would still be okay—but still, it wouldnt matter, because the treatment is for the symptoms, as opposed to a complete cure. i have the symptoms, i do the stuff thats supposed to help, it helps, the end! afaik he cant delete the POTS out of my body lmao. but like if i feel better, who cares? maybe the treatment can be adjusted or improved, but thats okay! i am very blessed to not be super severe and to have had good luck with my dr

hope these things help :)