When does your Week 1 *really* start?

/When does your Week 1 *really* start?

When does your Week 1 *really* start?

bellHere’s a question I get quite a lot: When does my Week 1 start?

You’d think this would be super-easy to answer, right? Because Week 1 starts on the first day of your period.

Except, sometimes, that isn’t exactly clear-cut.

I was reminded of this during the start of my own Week 1 this cycle. I had a little spotting. Then, for the rest of the day, zilch. Nothing. Nada. Zero bleeding.

The following day, it was like someone finally turned on the faucet down below.

So, when did my Week 1 start–on the spotting day or full flow day?

The spotting day.

Here’s why: When you start to bleed, even if it’s just a few drops, it’s a sign that your estrogen has dropped to its rock-bottom point, which triggers the uterine shedding.

That’s key because after that, your estrogen level starts to slowly climb back up. Even if you don’t start gushing for a day or so. And that rise in estrogen is the hallmark of your Week 1.

So, when you notice a few drops down below, tag that as the start of a new cycle–and start counting from there.

Hope this clarifies things!

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By | 2018-04-05T17:46:02+00:00 October 22nd, 2014|hormonology tip, Week 1|2 Comments

About the Author:

Gabrielle Lichterman, founder of Hormonology® and a longtime women’s health journalist, pioneered the growing movement among women to live in sync with their menstrual cycles and know more about all the ways their hormones impact their moods, health and behavior. This movement was launched in 2005 with Gabrielle's groundbreaking book, 28 Days: What Your Cycle Reveals about Your Love Life, Moods and Potential, and her creation of Hormonology®. She offers a variety of tools--including her popular free Hormone Horoscope® app, eBooks, infographics, videos and tips--to share vital information about hormones.


  1. Gabrielle Lichterman October 22, 2014 at 10:39 am

    I’m so glad all this information (including today’s post) has been such a big help for you, Barbara. The most common phrase I hear from readers is “Now I realize I’m not crazy–it’s just my moods cycling like normal.” So, you are definitely not alone in that experience!

  2. Barbara October 22, 2014 at 10:23 am

    Thank you for clarifying this for me too! I have been tracking my mood and cycles for about a year now after reading your blog. It has helped me TREMENDOUSLY in realizing that I’m not crazy it is just my mood cycling like normal. I know when to expect my grouchy days, My migraine that I get religiously every month, the body aches, and the good and energetic days. Thank you so much!

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