Anyone else waiting on a period to start Clomid? :(

Elsie • 💙04/2018 & due with #2 11/2020
I never thought I'd be praying for a period, but I am constantly hoping it will be here. I'm 5 days late and last month was my first period in 11 months. We are waiting on my period to start before I start Clomid, but what if it doesn't come? Progesterone again? Has anyone else been through this?  Thanks. 😔