I had my GB taken out last April. I was having an upper burning/pain/ache in the middle of my torso, between my breastbone (a few inches above my belly button). My GI didn't know "what" would cause that kind of pain. My cousin who is an ultrasound tech suggested I get my GB checked, even though my GI didn't think that was the problem.
I would have placed money on my GB being fine but NOPE! I had gall stones...a lot of itty-bitty ones so out it came. My GI was shocked. I was shocked. My cousin was not. According to her, the pain that most bad GB's cause aren't typical. I always thought the pain had to be sharp and on my right side. Not the case.
I think anything digestion-related should be tested if a person has Crohn's. You never know! After my GB was taken out, I came out of my 2-year long flare. Go figure.