I've been struggling for several years and increasingly now with several symptoms that kind of look and at the same time don't look like POTS
- often feeling like my blood pressure dropped violently but my heart is going a bit faster (but normally not above 110bpm) with dizziness, cold sweats, nausea, tunnel vision and tremors. Also it feels like my heart "skips a beat sometimes". This happens quite randomly, sometimes when I stand up but other times simply when I'm walking, going up or down stairs, sometimes for brief moments and other times for hours. I also find it really uncomfortable and borderline painful to stand up straight. My blood pools in my legs and feet, they get heavy and painful and I get lightheaded. I've never fainted.

Other chronic problems I have: chronic back pain, joint instability, hashimoto's, probable endometriosis (waiting for confirmation). I'm also autistic. I'm active, workout and my weight is normal for my height.

I've already been to a cardiologist who did 0 exams to me and gave me a medication to up my blood pressure, it didn't work and I'm fucking sick of doctors not ordering exams and invalidating my symptoms.

Could this be POTS?