Ovulation predictor kits, or OPKs have become more popular among women or couples who want to identify when they are more fertile. Normally, OPKs can detect a surge in the production of luteinizing ...
In a perfect world, ovulation predictor kits, or OPKs, would infallibly detect ovulation, and having sex while you're ovulating would inevitably lead to pregnancy. The reality is much more complicated ...
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