Cycle calendar is messed up

Jessii • Canadian 🇨🇦 East Coaster 🔱 living on the prairies 🏔 Mommy to Wilhelm & Jānis 🧒🏼👶🏼 03.30.19 💍

My cycle calendar is totally messed up. My last period ended on November 25th but it's saying I'm 45 days late. And the circle thing is showing a bunch of purple, green and red dots. Is there any way to reset this! I can't track my stuff properly when it's like this.

Thanks !