# pcos # pcosaa # cyster question - I was # diagnosed in January of 2015. i always had irregular periods but never missed one. I have all my pms symptoms at normal timing but no period so far this month. According to my calendar im only a day late but on the birth control pills im 5 days late. There is absolutely no chance im pregnant. Can a missed period happen in the middle of treatment? navy blue items of the formal occasions to wear