My period is 3 days late

Joanna
Hello Ladies, my period is 3 days late, November I got my period the 20th, December the 19th, it's January 20th, and my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> said I was supposed to get it the 17th. So I let my tracker know that I'm late, and it reset the date to January 21st. I'm hopping my period doesn't come tomorrow ❤️.