Hey Strawberry, welcome back!
It sounds like your RE has a smart approach, I kinda wish mine did that! I always wonder if the eggs have actually released on the day of the IUI and that should give you some comfort to know for sure. Do you do pretty well on the clomid, symptom-wise? I don't usually have many issues with it other than that I seem to think more slowly! haha.
I had my IUI on Friday afternoon and it went pretty well, although more uncomfortable/painful than usual, the nurse was not the most gentle. We ended up having about 12 million total count after washing and 3 mature eggs (which caused quite a bit of ovulation cramping from Friday thru Sunday). Those are about the same #s we had on IUI#1 for what it's worth. No real symptoms for me other than slight cramping (which I think is residual ov pains) but I have been paying a lot less attention this time around...mentally easier I guess.

We have a consult w/ the RE on 5/29.
Good luck with your upcoming monitoring appt and keep us posted!!