3 days late.

Hazie
Glow always predicts my period date within 24 hrs. This cycle I was due Monday for my period. Still, it hasn't come. I haven't taken a test yet, i do have some symptoms (tender breasts, very emotional). 
​But...I've changed and pushed my period back on glow, it's not suggesting to take a test. Should I hold out another day for a test?