Hi, I've Been Having Severe Nausea, No Vomiting, I Usually

Hi, I've been having severe nausea, no vomiting, I usually feel very full, pressure under my rib cage. Doesn't matter how much I eat. Usually leads to 4 or 5 bowl movememts. Usually have bowl movement that are small ball shaped clumped together normal to loose but not runny. Sometime with what looks like mucus. After I have these the nausea goes away. I have been diagnosed with slow digestion. Was taking Reglan and it seemed to help. I also was diagnosed with autoimmune hepatitis and am on azathioprine and prednisone. That was in 2004. Liver function tests have been normal for a few years.