Al,
Son, yes, diverticulitis CAN get out of control and cause all sorts of damage, as the poster Coughting said, and I am doubly SORRY, Al, that I left out of my original post some points on that one. Diverticulitis MIGHT lead to surgery, and so as I had suggested in my first post, you should go back to your primary, which you said you'd call Monday, and get a new gastro to do the colonoscopy.