The IUI was this morning. It went very well - the post-wash count was 43 million! I think an extra day of abstaining helped achieve a higher number. Ovulation pain started this morning, so I think the timing was just right. Let's hope I catch a break this cycle.
EDITED TO ADD:
I just realized that I didn't provide an update on Saturday. Well, I turned out to have 5 mature follicles when I went for monitoring Saturday morning. There were at least 3 in the 18+ mm range. The doctor said that I'll have a high risk for multiples and wanted to make sure I was open to selective reduction. So, it looks like I'll hopefully ovulate at least 2 or 3 mature eggs.