Hi and thanks for the query, Bloating is a common symptom that could either be associated with an organic disease or juts functional disorder. Changes i diet, inadequate intake of vegetables and fibre, less drinking of water on its own could lead to bloating. eating fermented foods could cause similar effects. Irritable bowel syndrome and should only be considered as a diagnosis of exclusion especially if order pathologies, especially n this terrain of past history of abdominal surgery is concerned. I suggest you visit your gastroenterologist for a proper evaluation to exclude the possibilities of an intestinal obstruction or a pathology of the colon. thanks and best regards, Luchuo, MD.