Spotting 4 days before period

Hey girls so I started spotting 3 days ago the first day it was just a small amount of pink discharge and that was it and yesterday and today there is just a small bit of blood on the pad after the entire day I’m still not due on until Monday or Tuesday I’ve had spotting before my period before but usually the day before then it’s a Full on period the day after but that is not the case here.

This is how much bleeding I had within a 12 hour period yesterday sorry tmi.

I’m starting to not believe it could be implantation but does anyone have any thing similar and know why it happens?