AF arrived yesterday, a day early. I called my RE's office, who are only open for a few hours on Saturdays, to ask them to call in the Clomid prescription so I can start it tomorrow. They never called it in, so I'll have to pester them again tomorrow to call it in. I estimate that the IUI will be around June 4. Let's hope third time's a charm. This will probably be my last Clomid cycle.