I get dizzy, like i'm not getting enough blood brain, heart fluttery, feels like i'll pass out if i don't lie down, the only way to feel ok is to nap?

Orthostatics: Ortho-WHATICS?--You could use a set of blood pressures in different positions, lying down for a few minutes followed by STANDING (not sitting- for all my colleagues out there reading this...better immediately standing- greater stress on the system when looking for subtle problems) and then, remain standing for 2 minutes. You should also get some blood work and a urine & maybe a PREGNANCY TEST?