if you know Check's position on IUIs then you'd understand why they did this
Mrs. A (no login) Posted May 18, 2011 9:36 AM
Check has a position on IUI which is that they should be done at 40 hours past trigger. With IUIs he believes the life of the sperm is shorter therefore he wants to have the egg released so that you are not eating into the lifespan of the sperm.
At your next talk with him ask him about this. I never had to have IUIs with him but I had a discussion with him about this when I asked him on behalf of the ladies on the over 40 board.