Is Cholecystectomy Advisable For Pain Below The Ribcage And Nausea?

I have had gerd for many years and been on medication. Last year I started with pain under my ribs on the right side and in the back. I started this fall to have a lot more attacks. My gastro doctor performed a few endoscopic and foudn that I was diagnosed with spincter of oddi disorder. He wanted to do one more test in which it involved MRI imagaing with radiostopes and then they injected some substance... I was very nausous and later at night was vomiting. Now I can only eat very little without feeling nausous. The results came back with gall bladder disease. What does this all mean? Do I need to have my gall bladder out to take away all this pain I have been having. I do see my doctor in a week but nothing has been explained to me except he wants to see me.