My bp is 79/50 lying down. it stabilizes to 120/80 after sitting up for a few minutes, and usually is high when walking around. i have pots but can't get to doc until thursday. any recommendations?

Fluid: The main question is if you are having any symptoms (dizziness/fatigue/blurry vision) upon standing. This, moreso than vital signs, usually guides intervention for patients with POTS. Loss of sympathetic control usually leads to salt/fluid losses, which leads to episodes. You must check with your doctor by phone, but s/he may suggest increasing salt and fluid intake and upright physical activity