Explore the exciting journey of week three in pregnancy, marking the crucial moments of ovulation and fertilization. Discover how your baby is developing and the changes happening in your body. Get practical tips on what to expect during prenatal appointments, along with valuable advice for partners. This week is all about growth and preparation, helping you navigate the early stages of pregnancy with confidence!
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insights INSIGHT
Week Three: Pregnancy Actually Begins
Week three marks ovulation and fertilization when pregnancy begins.
Vanessa Merton says the fertilized egg travels to the uterus to implant.
insights INSIGHT
The Sperm's Extremely Selective Journey
About 250 million sperm are released but only about 400 reach the egg.
Vanessa Merton explains only one sperm penetrates and fuses with the egg.
insights INSIGHT
Traits Are Set At Fertilization
When sperm and egg nuclei merge, core traits like sex and some physical features are set.
Vanessa Merton states this genetic fusion happens immediately at fertilization.
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Welcome to week 3 of your pregnancy. This is the week of ovulation and fertilization. Find out how your baby is growing this week and learn what is happening in your body. Plus, get a heads up on what to expect at your prenatal appointments and a tip for dads and partners.
See a picture of what your baby looks like this week, read the transcript, and access the additional resources for week 3.
Thank you to Zahler for supporting this episode and helping power the 40 Weeks Podcast.
Zahler goes above and beyond in formulating their Prenatal +DHA. It's made with high-quality nutrients like the active form of folate and bioavailable iron. Plus, it includes essential nutrients like omega-3s that you will not find in most other prenatal vitamins. In the month of November 2025, save 35% with the code PREPOD35 on Amazon: http://amzn.to/2tFOBgb
Join Pregnancy Podcast Premium to access the private podcast feed (in your favorite podcast app) with every episode ad-free. Exclusive access to all episodes, articles, and resources on the website. Plus, a digital copy of the Your Birth Plan book. Your step-by-step guide to creating the birth experience you want. Including sample plans and a master template you can customize.
40 Weeks Pregnancy Podcast