If you’re familiar with cycle tracking, or you’ve been in the fertility world long enough, you’ve probably been taught that cervical mucus and ovulation tests show you’re ovulating, and that your BBT rise (or your blood work progesterone) confirms you ovulated. Maybe your doctor looked at your progesterone level and told you the same thing.

How to confirm ovulation

But the truth is, none of these things actually confirm ovulation. There’s only ONE way to confirm ovulation is taking place, and it’s not part of the standard fertility workup.

Andrea, my client, showed up to our first session with her cycle charting in hand. She had a progressive, fertile mucus pattern, a positive LH strip, and a beautiful, sustained BBT rise on her Natural Cycles app, with perfectly timed intercourse every other day. Her period showed up every 30 days like clockwork. Her labs were all “normal” (though I did catch a few things her doctor missed), so the REI’s next step was IUI, of course. She was going into year two of not getting pregnant, yet every sign pointed to ovulation. On paper, she looked like she was ovulating.

And I want to shout this from the rooftops:

Looking like you ovulated isn’t the same as ovulating.

You can have fertile cervical mucus, an LH surge, a strong BBT rise, and even a robust progesterone level, and still not be ovulating. That’s because Luteinized Unruptured Follicle Syndrome (LUFS) is something most fertility clinics never even investigate. (That BBT rise and progesterone bump are indirect clues, not direct proof.) 

Part of the reason is simple. LUFS doesn’t show up on bloodwork, and most REIs only order a single ultrasound early in the cycle, not the series it takes to actually watch a follicle rupture. So unless someone is specifically looking for it, it doesn’t get diagnosed.

What’s LUFS?

LUFS happens when your ovary matures an egg and luteinizes (meaning it produces progesterone) but never actually releases the egg. The egg stays trapped, which makes conception impossible that cycle. The condition mimics every sign of ovulation, fertile CM, an LH surge, a BBT rise, a normal period, without ovulation ever happening. No app or chart can show you that. Only an ultrasound can.

Andrea’s doctor told her she had unexplained infertility, yet he never investigated LUFS. After two sessions together, I encouraged Andrea to see a different fertility specialist who could perform a follicle study, a series of ultrasounds that track the ovary in real time to see whether it actually releases the egg. She was hesitant, but she followed my advice.

Just one cycle later, she had her answer: LUFS.

Finally! Something to work with! As we dug into her case together, we found the thing nobody looked for: low-grade pelvic inflammation, interfering with her ovary’s ability to release the egg each month. It wasn’t showing up in standard labs and it wasn’t something anyone had thought to investigate. But once we knew it was there, we finally had something to actually address.

Let’s find out what’s really going on

If you’ve been doing everything “right,” charting every sign, hitting every mark, and still nothing is happening, this might be your story too. Perfect-looking charts don’t rule out LUFS. They can hide it.

If you think this could be you, send me a DM on Instagram. I’d love to hear about your cycle and help you figure out if this might be part of your story.

 

This post is for learning purposes only and is not medical advice. If you have symptoms that worry you, please talk with your healthcare provider.