BCP Protocol

So I was supposed to start IVF this past Friday, but unfortunately good old AF took a hiatus until today. When I called to get my baseline scheduled I was told that because I was late, the incubators are full and they’ve bumped me. Now I need to start BCP until they get space freed up. 😭😭😭

For those that have started with BCP as a down regulator, how long after your last pill were you able to start stims? I’m trying to figure out how bad of a shape I’m in now if by chance a space opens up in the next two weeks.

TIA!!