I NEED HELP IM CONFUSED

Yxm

So on my OVIA app that I use to calculate my periods it said I would start my period yesterday so I did around 3pm , I didn't have no symptoms of AF and when I wake up this morning my pad has no blood on it what so ever and just yesterday it was very little blood I woke up around 5am this morning thinking it got heavier but it didn't , what does this all mean