when i was on it, i would get it either the last day of the placebos or the first day or two of the new pack. i only got my period every three months last year when i stacked my packs.

the only other bc i was on before the yaz was ortho, and that was only three months (and nearly 10 years ago) because the high hormones gave me ridiculous side effects, so i can't compare the timing of the period coming to any other pill, but it did seem sorta weird to me.