Period help

Chloe • Tue, Mar 10 • CF

Every month I have a 28 day cycle. Last month I came on 4 days early. I was due on on Saturday but came on on Tuesday instead. That obviously changed glows prediction meaning glow said I’ll be due on today (10th March). It was only 1 month where I started early so would I be due on today or Saturday which would of been my original date??