So after weeks of impatiently waiting, today Diva went with me to the office for her x-ray.  She has been cruising through pregnancy, though with a decided waddle to her stride.  X-ray did of course verify pregnancy.  Despite her large size, we are looking at a smallish litter based off of x-ray.  No concerns at this point about the puppies being oversized.  The x-ray showed consistent size, with normal skull size.  They are however looking long.  They're actually bigger than the span of my hand going thumb to pinkie.  Next weekend should bring the big day.