ugh apps

I've been irregular all.my life I can never tell when I'm going to start but for the last 2 months they've somewhat been on a every month same week schedule glow says I'm 3 days late pink pad says I'm 5 days late and period tracker says I'm due tomorrow lol Idk what I'm doing wrong I just started taking fertilaid so hopefully that will put things in track...anyone else irregular and hates it