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Old 05-17-2006, 07:46 AM   #2
jedibunni's Avatar
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Join Date: Apr 2006
Location: MN
Posts: 575
Re: Positive OPK and FertilityFriend

The average is within 24-48 hours but some women may have a much shorter window. There was a girl on another forum that only had a positive OPK for 8 hours!!! Your LH surge starts about 3-6 hourse before it hits your blood then urine....

I really suggest the

She has a great OPK section (Q&A). It helped me alot to figure this stuff out!

Mommy to Grace 10/99, Kendall 12/04 and Emily 5/07
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