Does this sound like Gallbladder Disease?

For 6 months now, I've experienced abdominal pain like nothing before. Mainly about an inch to the left and up of my belly button, and also on the exact opposite side, a burning-type feeling? I always feel nauseated but I've never once vomited, the stomach acid burns, and I get chills/no fever? The surgeon today said it was possible I have gall bladder disease, and the ultrasound found a 5mm gallstone. I've gotten a couple opinions, and one of them thinks it's nothing at all to do with the gall bladder. How right does this sound? Does it sound like the gallstone is causing me all this pain? I'm a 16 year old male, I'm undersized, and I'm normally very healthy and active. What does this sound like to you guys? I've done 2 CT Scans, a Colonoscopy, a Barrium X Ray and numerous blood tests- everything is normal.