Is it possible to start temping at CD8? I have an app that said my O will be on CD13. And last month I’ve got an positive opk on CD13 (with clomid cd2-6) so the clomid didn’t make me ovulate later. this month i took clomid days 3-7 so i wanna exactly pinpoint O so that i have only one attempt. Because last month i think I’ve got a BFN cause of the cutoff and rephresh (had only one attempt at CD12.) :(