I had surgery January 16th for hiatel hernia closure and at same time my gastric sleeve surgery was converted to the bypass cause my stomach kept getting lodged in the hernia. I have the symptoms of an anastomotic leakage, pain in left shoulder area off and on while eating and have to stop eating rare back in seat until it stops. For last 3 days it's done this while eating. So I googled that question and it said an anastomotic leakage is what this symptom comes from.