Ovulation Predictor Kits (OPKs): How They Work + Correct Timing
Ovulation Ovulation Predictor Kits Explained – How They Work & How to Use Them Accurately OPKs detect your real hormone surge, not a calendar guess. Here’s exactly how they work, when to actually start testing based on your cycle length, and the timing mistake (“test with first morning urine”) that even some clinic handouts get…
