Progesterone suppositories

Dex 🇨🇦

Getting started to hopefully do my first FET. Just curious as to when you were all told to start using progesterone? I got my positive opk this morning, and in the handout my clinic says to start tomorrow- but as ovulation day most likely will be tomorrow, doesn’t that seem a little soon? I will ask the nurses too when I call, but I’m just wondering what you were all told.