Progesterone and delayed AF

Mb16:

How long did progesterone delay your period? I had an <a href="https://glowing.com/glow-fertility-program">IUI</a> 18 days ago, ovulated 17 days ago. I took a pregnancy test at 13 dpo and it was negative so I stopped the progesterone. Now it’s been a week and still no af. Went for a blood test this morning to see what’s going on.