Delayed for 4 days

Angel

my period have been delayed for 4 days now base on <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>'s tracker. since I use <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, my period is usually earlier for 2-3 days compared to the tracker. I don't feel anything at all regarding any signs of pregnancy. should I be worried? hope you girls can advice me. TIA 😘😘