March 06, 2025

When Are You Most Fertile? Cycle Myths Busted | Elina Berglund

1 hour 12 minutes

Are you tracking your cycle correctly? Only 13% of women ovulate on day 14—so what does that mean for you? In this episode, I sit down with Elina Berglund, co-founder of Natural Cycles, the first FDA-cleared birth control app. We’re busting myths about ovulation, fertility tracking, and how understanding your body can empower your reproductive health.

This episode is brought to you by:

Natural Cycles use code DrBrighten to get 15% off an annual subscription plus a free Bluetooth thermometer. https://www.naturalcycles.com/join-me-plan?utm_campaign=podcast&utm_medium=organic&utm_content=jolene-brighten&utm_source=podcast&code=DrBrighten&name=Dr.%20Jolene%20Brighten&percentage=15

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🔗 Links & Resources Mentioned in This Episode:

Elina Berglund’s Instagram: https://www.instagram.com/elinascherwitzl/

Natural Cycles Instagram: https://www.instagram.com/naturalcycles/

Article: Ovulation Signs Every Woman Should Know https://drbrighten.com/ovulation-signs/

Article: Phases of the Menstrual Cycle https://drbrighten.com/phases-of-the-menstrual-cycle/

Beyond The Pill by Dr. Jolene Brighten https://amzn.to/3becjT7

Healing Your Body Naturally After Childbirth by Dr. Jolene Brighten http://amzn.to/2dngRJX

My previous episode on Perimenopause Explained https://www.youtube.com/watch?v=Hu1_qSeAzc0

Study: Time to pregnancy recognition among FDA users https://www.tandfonline.com/doi/full/10.1080/01443615.2024.2337687

Study: Time to pregnancy using a FDA fertility awareness mobile app https://www.tandfonline.com/doi/full/10.1080/01443615.2024.2337687

Study: Detecting variations in ovulation and menstruation during COVID https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0258314

Study: Association between menstrual cycle length and the COVID vaccine (US cohort) https://journals.lww.com/greenjournal/fulltext/2022/04000/association_between_menstrual_cycle_length_and.2.aspx

Study: Impact of Covid vaccination on menstrual bleeding https://obgyn.onlinelibrary.wiley.com/doi/10.1111/1471-0528.17471

Study: Association between menstrual cycle length and COVID vaccine (global) https://bmjmedicine.bmj.com/content/1/1/e000297

Study: Timing of COVID vaccine and effects on menstrual cycle changes https://pubmed.ncbi.nlm.nih.gov/38412506/

Study: Association between menstrual cycle pattern regularity and changes in menstrual bleeding following COVID vaccine (Secondary Analysis) https://srh.bmj.com/content/early/2024/12/31/bmjsrh-2024-202564

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