<s>[INST] I have been having pain in my lower right abdomen for years but it is increasingly getting worse. I feel bloated and at times have had major gas. I have been to the dr, have had CTs, xrays and ultrasounds and they have seen nothing.  it is worse when I am sitting down. It feels okay in the morning and gets progressively worse. [/INST] HI. The cause of your symptoms of pain in lower abdomen can be due to the following reasons considering your history of these symptoms for so many years::- Irritable bowel syn Chat Doctor. -Intolerance to a particular type of foods and beverages.-Stress and anxiety.-Organic causes like Tuberculosis, Crowns have been rule by the tests you have undergone like - CTs, X-rays and ultrasounds As you problem is increasing with the day passing by, it is thought to be due to IBS. I would advise you the following ::-Colonoscopy and biopsy-Diagnostic Laparoscopy -Avoid all good and beverages that enhance your problems.-Stay away from stress and anxiety at any cost. And take medicines for this under a Doctors prescription. Change of life-style will definitely help you the most. </s>