Period after progesterone?

A

I had my first <a href="https://glowing.com/glow-fertility-program">iui</a> on 4/26 and started endometrin on 5/2.

If I get a bfn on 5/10, I’m supposed to stop the progesterone and wait for my period.

Has anyone experienced this? How long did it take for your period to start? I was googling, and I saw that some people said that they had terrible cramps when they got their period after taking progesterone. I’d really appreciate some advice on what to expect.

Thank you!