I am closing in on 27 years old. Female. Been sick & suffering for four long years. Chronic dizziness, fatigue, lightheadeness, nausea, extreme belching(sometimes hundreds of times a day), diagnosed last year with a rare form of hypoglycemia.. Reactive Hypoglycemia. I suffer random spells of tachycardia, & chest discomfort. Ive seen 3 cardiologists & had every test minus a heart cath(I tried to get thst, but told NO).