This cheat sheet breaks down LH and OPKs in a simple way so you can stop second-guessing your results and feel more confident, especially if tracking has not worked the way you expected.
Real LH Surge Patterns
Learn the main patterns so you can stop assuming every cycle behaves the same way.
What OPKs Really Show
Understand what your results mean, and what they do not mean.
Why Timing Can Be Misleading
See why ovulation timing is not always as simple as a single positive test or an app prediction.
How To Test More Effectively
Learn how often to test and why urine concentration matters for clearer results.
From Confusion to Clarity
Whether you are just getting started or LH tracking has felt confusing, this cheat sheet helps you understand what your results really mean.
Before
You are staring at tests and still feeling unsure.
You are worried you might be missing something.
You have tried tracking, but it still feels confusing.
It seems like tracking is not working
Your different tracking methods or tests don't "line up" together
Paying for lots of LH tests and not feeling like it is worth it
After
You understand the patterns behind your results
You know what LH is actually telling you (which isn't what people think)!
You have a science-based guide to help you make sense of it
“This sheet is so helpful! The graphs especially. I feel like I [now] have an idea what is happening. I think I'm either 'ovulating during the surge peak' or 'just after'. It's so interesting and beautifully done. ”
R. O. from Wayne, New Jersey
“Now I get why my temperatures were rising before my LH surge was over. I was actually ovulating really fast, and I was always trying to time things the day after and was missing it. ”
K. M. from Portland, Oregon
“[The biggest insights were] learning that testing in the afternoon was correct and helping understand how lh and ovulation work together!”
K. H.
Frequently Asked Questions
This is for anybody interested in using LH tests to monitor their cycles.
This cheat sheet is especially helpful for anyone who has felt like LH tracking was confusing, frustrating, or not working the way they expected.