FET protocol + Good & “Bad” News

Well good news: my suppression check was unremarkable (Im cleared to start stims this week) 😁

Bad news (not really lol): Doc says he is 95% sure we will have to do frozen & transfer early August vs attempting fresh. He says my AMH is way high & I have “tons of eggs” also my age & race puts me at higher risk of OHSS. But he did say we’ll monitor my blood work & egg growth & if for some weird reason I don’t produce a lot of eggs & it seems feasible we can open up to the idea of fresh.

So I’m okay with all of that. My question to the ladies is when do you start prepping for a FET? My doctor basically just said it depends on when your period after retrieval starts... so when does your period typically start after retrieval? & after it does start what is the protocol like? And why do some women have to take birth control again? Im trying to be reasonable here & also I’ll be starting a new job soon so I want to try & create a realistic timeline.