Stages of Fetal Development During Pregnancy

Both expecting mothers and their babies undergo changes during pregnancy. In order to ensure that expecting parents understand what is to come, it’s important to understand the stages of fetal development during pregnancy. If you'd like to learn more you can always visit our center. Our certified medical services include free pregnancy information, pregnancy tests, and ultrasounds. 

The Germinal Stage: The Beginning of Life

The journey of pregnancy begins with the germinal stage, a phase of fetal development that many women may not immediately realize they have entered. This stage begins at the very moment of conception when the sperm meets the egg in the fallopian tube. This union forms a zygote: a unique new life. Over the next week, the zygote undergoes cell division and travels to the uterus, where it implants and becomes a blastocyst. It's during this phase that the foundation for the placenta, the baby's lifeline, is formed.

Placenta

The placenta is an organ that forms in the womb around the baby. The placenta attaches to the wall of the uterus and encompasses the child. When you give birth, the placenta will be delivered in the third stage of labor, often called “afterbirth.” Where the placenta attaches to the uterus is important as you continue the pregnancy journey. The most common concerns about placenta attachment are: placental abruption and placenta previa. Placental abruptions occur when the placenta partially or completely detaches from the uterus. If a doctor sees an abruption, he or she might suggest an emergency delivery. Placenta previa occurs when the placenta attaches to the lower part of the uterus. If placenta previa continues late into the pregnancy, healthcare providers often recommend C-sections. These illustrations depict fetal development later than the germinal stage, but they illustrate placental concerns.

The Embryonic Stage: A Period of Rapid Development

Following the germinal stage is the embryonic stage, spanning from the third to the eighth week of pregnancy. Once the blastocyst implants successfully in the uterus, it is now referred to as an embryo. This stage is marked by significant developments – the formation of the neural tube (future brain and spinal cord), the heart, and limbs. By the end of this stage, nearly all the baby's organs and systems are established. It is also during this period of fetal development that many women experience morning sickness due to hormonal changes, and if you need support during this, we can help by providing resources and a free medical consultation. 

The Fetal Stage: Preparing for Birth

Entering the fetal stage at week nine signifies the final stretch of pregnancy. This stage continues until birth. Around this stage of fetal development, the baby's gender can often be identified. This period is characterized by the growth and maturation of organs and systems. Distinctive features like hair and fingernails start to develop. Most of the baby's weight and length are gained during this stage. Around the twentieth week, many mothers begin to feel their baby's movements, a heartwarming milestone in pregnancy.

Week-by-Week Fetal Development

There are many detailed week-by-week breakdowns of fetal development. This information can provide deeper insights into the incredible journey of fetal development.

At FCWS, we are committed to offering confidential and compassionate support to individuals navigating the complexities of pregnancy. Our team understands the intricacies of fetal development and is here to provide guidance and support tailored to your unique journey. Your well-being and the healthy development of your baby are our utmost priority.