hi. noted history of cholecystectomy, occurrence of pain over the post-operative site and green stools. are you taking in any medication or supplement right now? it is best if you consult with a doctor, preferably a gastroenterologist or a general surgeon, for physical examination and clinical evaluation. recurrence of stones somewhere along the hepaticopancreaticobiliary tree must be ruled-out. diagnostics (such as ultrasound, bilirubins, liver function tests, etc.) and management (medical and/or surgical if indications are found) will be directed accordingly. hope this helps. good day!! ~dr.kaye