Feeling Faint: Seeking Advice

Since the end of July I've been feeling really faint. I haven't hit the ground yet but my vision goes black/blurry, my mouth gets dry, my heart pounds and I can't hear my surroundings, a few times I've forgotten where I was, and my body gets weak and I need to sit down. I have a doctor's appointment coming up and I've already brought it up with her, but I'm not anemic, and none of the results from my blood test were concerning. I've googled "why do I feel like fainting when I raise my arms above my chest" to try and get an idea of what questions I can ask my doctor and PoTS was one of the results. I don't think I have it but I think when they screen for pots, they look for other conditions that mimic the symptoms. would it be worthwhile to ask my doctor about that? what are some other questions I can line up? are there any questions I need to ask myself about my symptoms that would make my doctor's job easier? (background information that may or may not impact the above information) the first time I brought the issue up, we also decided to talk to my therapist about my symptoms possibly being the result of non epileptic dissociative seizures after my friend described seeing me shaking and sweating during one outside of our local mall as looking almost like a seizure. (I've tagged DID because it's the only disorder I have, that I know of, that may be impacting this)