You ovulate when LH drops after the surge? 🤔

Sam

What? Has anyone else heard this before? So I recently started using Femometer to do BBT and so far I love it BUT this morning I got this notification

I have NEVER in all my TTC research heard of this. Everything I’ve read is that as soon as your surge starts you will ovulate 12-36 hours later. Every OPK I’ve used says there’s no need to keep testing after you get a positive.

Has anyone ever heard of ovulation occurring when LH drops after a surge? Maybe they just figure your LH usually has dropped 12-36 hours after the positive OPK?