I know that the test line is suppose to be as dark or darker than the control line. But on CD 15 I noticed the line was starting to get dark & then it got lighter from there.. so could CD 15 my surge? So lost..

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Mine are never as darker, half the time they are barely dark as. It depends on your lh surge levels. Everyone is different

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I should have done that, but I thought that it was going to get darker not lighter :/ thank you

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Hard to say. I use cheapies and once the lines get dark I use a digital to confirm. Good luck!

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