If I exercise semi-strenuously, I become pale, extremely exhausted and have severe nausea. Also, eating a moderate amount of food causes me to be very full. If I exercise just a little, I become sick at my stomach. A few years ago, I had a cardiac calcium score of 0. I have been tested for ulcers, gastroparesis, acid reflux and have had an endoscopy and everything was normal. I have also had my gall bladder removed. Nothing has seemed to help my symptoms.