<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been having frequent abdominal pain, bloating, and constipation. I think I might have irritable bowel syndrome.  <response>: The symptoms you described could be due to irritable bowel syndrome. To diagnose it, we need to perform some medical tests including a complete blood count, lipid panel, and hematologic tests. We may also need to conduct a sigmoidoscopy, colonoscopy, rectal examination or a pelvic exam, along with a scan ct. 