What Causes Severe Nausea And Indigestion?

I had a HIDA scan. After an hour and a half, my gallbladder didn t show. They had me drink an Ensure, and then it appeared. What does this mean? I m waiting on results. I have lived with severe nausea and digestive issues and now pain, for 2 years. My doctor was neglectful, and I demanded this test.