I have had and still have persistent pain in lumbar right side. Pain now under control with morphine. Ultrasound tells that my CBD is generous(AP= 11.6mm) and contains small amounts of debris. Minimal hydronephrosis seen in the right kidney. Left normal. I have had my gall bladder removed a few years ago and three large stones removed.
HIIT is difficult to be sure at this stage whether the pain is from your kidneys or from the debris in CBD. I would advise a CT scan of your kidneys without and with contrast to find the cause for HY Chat Doctor.  Regarding the dilated CBD- It can be normal after gall bladder removal but since there are debris, I would advise to see a general surgeon or a hepatobiliary surgeon.