My son, 35, is experiencing constipation and bloating, and then discomfort for 2 or so hours after a bowel movement. He has a spinal fusion as a result of a surgery he had at 16 for scoliosis. Sometimes he reports bleeding, but has attributed that to a hemorrhoid. His blood pressure is also rather high. No temperature. No definite area of abdominal pain. Doesn't want to go to the doctor...but it seems like he needs some tests. His doctor isn't very easy for him to talk to. recommendations?