How a Baby Grows During Pregnancy
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Pregnancy begins when a male's sperm enters a female's egg. This is called fertilization. Fertilization usually happens in one of the fallopian tubes that connect the ovaries to the uterus. The fertilized egg moves down the fallopian tube to the uterus. Once it reaches the uterus, it implants into the lining of the uterus and begins to grow.
For the first 8 weeks, the fertilized egg is called an embryo. After 8 weeks, it is called a fetus. As the fetus continues to grow, it receives oxygen and nutrients through the placenta, which is an organ that grows to support the developing baby. The placenta is the life support system for the baby. It provides oxygen and nutrition and removes waste.
The day when your baby is ready to be born (full term) is your estimated date of delivery. However, most babies are not born on their estimated date of delivery.
You will also have a second trimester ultrasound to check your baby's development.
This information is not intended to replace advice given to you by your health care provider. Make sure you discuss any questions you have with your health care provider.
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