If I go off my average cycle days I would have been 5 days late for AF 2 cycles ago, but I have only had IUD out since September (was pretty regular before getting IUD) ANYWAY, if I go off my last 3 cycles AF would have been due May 16th and that first cycle I would have only been like a day late I guess. But I am on 8 days late right now (based on average cycle days). I am CD42 today.