My son who is 37 and is not one to run to the doctor. He has been having severe back pain, and at first it seems to be associated with early morning bowel movement, but now the pain is persisting almost all day. He is scheduled for a CT scan and a colon test, and he also has to do a stool screening test for three days. His great uncle died from bowel cancer at 53, his grandfather on my side had diviticulitis and had a colostomy for six months, and his grandmother on his father's side had one as well. Am I being overly concerned about my adult son?