June 12th, 2009, 08:59 PM
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nakmaster
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Join Date: Jan 2009
Location: Western NY
Posts: 8,401
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Well, truthfully, even with using OPK's you can't tell the exact day you O'd without temping. 3 days of high temps after a low temp can equal O.
With a positive OPK, you can O 12-36 hours after....and the egg can live 12-24 hours. So you could have still caught it. I'm pretty sure I O'd yesterday but we are still DTD today and tomorrow for "insurance" purposes.
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