Whether you're trying to conceive or you want to track your cycle to better understand your body, OPKs (Ovulation Predictor Kits) are commonly used to determine when you ovulate based on hormones released by your body. They are one of my favorite ways of determining ovulation because they are fairly easy to use and pretty damn accurate, but of course they do come with a few perimeters and a bit of a learning curve.

Which ones to buy? When to test and how? And what do these tiny pee strips actually mean? I'm going to explain it all for you right now.

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