Is it normal for an early period?!

Nicole • 🌈 July 2020 from IVF Surprise coming June 2022

Hi all, I’m Day 24 of my first cycle in protocol, which for me has just been a birth control pill. Supposed to downreg Thursday, but this morning I woke up on my period - this is not spotting I’m sure. I’m waiting for my clinic to call back but it’ll take a couple hours. Has anyone else had this happen? Is it supposed to happen?! Am I looking at another month? Any experience appreciated!