I am 24, pregnant and experiencing pain between the upper right abdominal cavity and my lower rib cage area. I have already had an ultrasound of my gallbladder and it came back negative. I have also been put on nexium for possible duodenal and gastric problems, but have yet to see any results from the medication. The pain was mostly when I ate, but now is more frequent and mostly when sitting down. There is also speculation of costochondritis. Is the pain because the baby is in a bad spot or is their something the doc might have over looked.