What Causes Delayed Periods While Taking Qlaira Pill?

HEllo, I am taking Qlaira pill. Last month I forgot to take the pill no.24 and I followed the instruction in the pack and stright away started the new pack. I finished that pack and my period hasnt started yet. I am continuing to take the pill as usual now. Does that mean that the period timing is different from the one I used to have and that is why my period is late?