Gallbladder Failure Stones In Bile Duct?

Stones in bile duct? - gallbladder failure

I had removed my gallbladder because of gallstones wide 15 years ago. I have a few other health problems, including heart failure. For weeks I had abdominal pain, which, like the gallbladder attacks until you have removed feels. I went to the doctor today and they said they may have a stone in the bile ducts. Is it normal? Someone else could this happen? The doctor gave me a prescription and asked me to go to the emergency room if the pain worsens. Is there evidence that may be prescribed by a doctor to be safe? Thanks in advance!