Late Period

Im currently 9 days late for my usually regular period. Im not pregnant. I also experienced spotting on day 17 & 18 of this cycle which I suspect is late ovulation but I've also never bled during ovulation before. I do have low progesterone but this has never interfered with my cycles before. Anyone have any idea what my body is doing or know the chances of returning to regular cycles after this one? Going to be TTC soon and suddenly I'm all out of whack X