21/10/11 last AF start - when would I have OV'd? I usually have a 28-40 day cycle, it varies. Last month it was 42 days, but the month before it was 30. OV tests never come up positive for me - but I must ovulate. Theoretically I could be due on from any time after tomorrow, but an IC came up negative yesterday and what me and my hubby thought was a faint line a few days before with a different kind, but we're not sure. I have the 10miu IC's - has anyone had negatives until they were late for AF before?