A little zygote forms
Week 3: Your fertilization and implantation
Although you don't know it yet, you might have conceived already. Fertilization occurs when an egg and sperm connect and form a single cell, called a zygote. Here's what is happening during your 3rd week of pregnancy:
Cell division and repetition
Approximately 12 hours after fertilization, your baby — right now, only a one-celled zygote — divides into two identical cells. These two cells each split, creating four cells, which then split to become eight. This process continues as the total number of cells in your baby doubles every 12 hours. While this division occurs, your zygote is moving down the fallopian tube to your uterus.
Your Week 3 nutrition and health
Refocus your nutrition to account for your pregnancy
Even prior to the 3rd week of pregnancy, how well you eat and care for yourself make a big difference in the quality of nutrition your baby receives.
What do the nutrients in your food do?
At 3 weeks pregnant, remember:
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