Hi and welcome to HCM
You sholdnt be concerned,but you should do ultrasound
to see is there stone in your gallbladder
. If yes, then cholecystectomy
should be performed. YOu obviously had stone stuck in main biliary duct which passed through. tHis caused temporary bilirubin elevation in urine and dark urine. Sometimes it can be dangerous because cholecystitis
may occur. I suggest to do ultrasounds and then remove your gallbladder because these attack will repeat. Especially after fat meal and alcohol intake.
WIsh you good health.