Hello! Thank you for the query. In some cases the gallstones symptoms and peptic ulcer symptoms/acid reflux are very similar. That is why after gallstones removal, sometimes the patient still has abdominal pain. It is because the main reason of his pain was not gallstones but peptic ulcers. This has probably happen at your case. The other possible reason is the stone left inside your biliary tract. Chest burning always should be checked with heart condition. Especially if the pain radiates to the left shoulder or jaw. You should have heart ECG, abdominal ultrasound, liver tests (AST,ALT,GGTP), amylase, bilirubin and if no findings in this tests, upper GI endoscopy should be performed. Hope this will help. Regards.