Here is my chart if anyone wants to browse it.
I think I am O'ing right now too! Hehe. I had a big temp drop this morning, which seems to happen to a lot of ladies right before or during the day of O. And I got a peak reading on my monitor.
OPKs drive me nuts, but I seem to get my best readings with FMU or around 2-4PM. But I know everyone is different. And for the past few days my OPKs fluctuated from almost positive, to barely visible, before I got my actual positive yesterday. Try taking one around 2-4PM today and see what you get. :)