What Causes Shortness Of Breath And Digestive Problems?

Hi there I have had woozy/fuzzy heads, nausea, real fatigue, shortness of breath and ongoing digestive issues for a number of years now. These symptoms have never been diagnosed, although I had a positive celaic result from a colonoscopy (blood tests do not support it though). A recent ultrasound has determined slight prominance of the hepatic veins and IVC which has led me to research IVC. I have no specific food allergy I am aware of, yet I avoid bread and heavy food as they fill me too full and exascerbates the symptoms above. I had a compression fracture of the L2 vetebra in 1992 and have had two babies since. Each pregnancy I sighed continuously and was always short of breath. My first born was just 2.5kg which was 12 years ago considered odd from a healthy moderate drinker. I am going to visit the same endoscopic specialist I have seen a few years back with the same problems. Should I be looking in a completely different area to digestion? 50 yr old white female :)