We've determined that I ovulate very soon after my kit goes positive, not the next day. Today my opk ent positive about an hour before I had an ultra sound of my ovary and it showed the follicle about to release. I had an ovudril shot, and then about an hour later I had the IUI. The sperm count was lower than target, and lower than it has been. We came back the next day for another IUI, and the numbers were even worse (5 million).
On this tracker I set my opk as positive the prior day, because that's the only way i get a good line and good DPO numbers.
My iGoogle Ovulation Tracker