How serious an issue is gallbladder sludge? i have vomiting episodes occasionally with mid-abdominal pain, but i'm not sure if gallbladder is cause.

Gallbladder sludge: Gallbladder sludge can be asymptomatic or can be a cause of cholecystitis and gallbladder symptoms, including pain and nausea. This can occur in the presence or the absence of gallstones themselves. If you continue to remain symptomatic, you should see your doctor or a gastroenterologist to sort out whether the gallbladder is your issue or not. Good luck.