“I had my gallbladder out 27 years ago. Since then, I’ve had five attacks of bile duct stones requiring endoscopic surgery. Apparently the bile duct can (and sometimes does) enlarge and hold stones, just the way a gallbladder does. See your gastroenterologist. I have fairly regular attacks, but have gotten infections those five times, where the bile duct had to be cleaned out. The procedure is called ERCP. I take Reglan to try to prevent the severe attacks, and it’s been two years since my last ERCP, so I think it’s working.
Don’t ignore this, as the infections can be very scary. Repbi is correct that you can have ghost attacks, but it is best to have them checked by a doctor.