Period after bcp?

LB • 👸🏼 2010 👼🏼 12/2017 👼🏼 3/2019 👼🏼 10/2020 👼🏼 3/2022 🧫🧪IVF Round 3 - 5/2022 Chasing our 🌈✨

I took my last pill Sunday night. My nurse said I should start my period 2-4 days after stopping. 3 days later and no period and no sign of it showing up yet. I’m supposed to have a scan tomorrow because that’s when my nurse estimated cycle day 1 to be. I’m getting worried that I’m not going to start my period tomorrow. So how does that work if I don’t get one? When did your cycle start after stopping bcp? Help 😫 I’m panicking.

(I did email my nurse but she’s in another time zone and 2 hours ahead of me so the office is closed now)