Hi. Thanks for your query. Noted your history of severe pain in the right lower of abdomen, lower back, comes and goes, and there is bloating with the pain. Your online search makes you believe that you have IBS and you have plenty of material available so not decided to visit the Doctors. Well, this looks to be a case of intestinal obstruction, may be due to a stricture or a cancer in the colon or small intestines hence getting the repeated pains along with bloating. I would advise you the following in such a situation: First of all to have consultation of a Surgeon so that a clinical evaluation and examination can be conducted. X-ray if the abdomen is a simple investigations and gives a lots of information is done in the standing position. Ultrasonography and CT scan of the abdomen. Tests of stool, blood and urine may give a clue and watch for diabetes and other general diseases. Colonoscopy All these investigations will give you the diagnosis and to go for Surgical correction is needed and medicines if surgery is not needed.