IUI timing question

LC

Hey this will be my first round of <a href="https://glowing.com/glow-fertility-program">IUI</a>. CD 14 is Sunday, but my doctor won’t be open. I don’t want to waste money. Is it pointless to try on day 15 or should I try to reschedule it for Friday which would be CD 12?

I left the doctor a voicemail asking yesterday and still haven’t heard back. I’m impatient and desperate to make this month work