The 4-week-old fetus is a period of intense embryonic growth. Your baby’s heart and circulatory system have begun to form. However, the baby is only the size of a sesame seed and looks like a small tadpole. Explore this magical journey with BabeMome.

How does a 4-week-old fetus develop? 4 weeks pregnant have a fetal heart?

4-week old fetus

  1. 4 weeks pregnant: Placenta and embryo begin to form

While you may be just starting to wonder if you’re pregnant, the blastocyst has already completed its journey from the fallopian tube to the uterus.

Once there, the blastocyst burrows into the lining of your uterus and implants. Immediately after settling in your uterus, the blastocyst undergoes massive division and splits into two groups. Half of what’s called an embryo will become your son or daughter, while the other half forms the placenta, the baby’s lifeline that carries nutrients and wastes away. when the baby is born.

  1. What is the size of the 4-week fetus and the image of the 4-week-old fetus

Deep in the uterus, the embryo is growing vigorously. At this point, what size are 4 weeks pregnant? Baby is about the size of a sesame seed and looks like a tadpole smaller than a human, consisting of three layers: ectoderm, mesoderm, and endoderm, to form all the organs and tissues for your baby’s body. after that.

  • Epidermis: The neural tube, from which the baby’s brain, spinal cord, nerves, and spine will form, begins to develop on the outermost layer, called the ectoderm. This layer will also create your baby’s skin, hair, nails, mammary glands, sweat, and tooth enamel.
  • Mesoderm: The heart and circulatory system begin to form in the middle layer or dermis. In fact, your baby’s tiny heart begins to divide into chambers and begins to beat and pump blood. The dermis will also form your baby’s muscles, cartilage, bones, and subcutaneous tissue.
  • The endoderm: is the third layer, which will be the site of the baby’s lungs, intestines, and rudimentary urinary system, as well as the thyroid, liver, and pancreas. Meanwhile, the placenta and umbilical cord, which provide nutrition and oxygen to the baby, are working.

Here is a picture of a 4-week-old fetus to help you visualize it more clearly:


How many months are 4 weeks pregnant?

If you are 4 weeks pregnant then you are in the first month of pregnancy. This is just the beginning and you still have 8 months to go before you meet your baby in real life.

What are the symptoms of 4 weeks pregnant?

You may notice some discomfort during pregnancy. Many pregnant women begin to experience breast pain, fatigue, and frequent urination during the first few weeks. You may also feel nauseous this week, although this usually shows up in the next few weeks.

The people around you won’t see any sign of the growth going on inside of you. But the mother also has to abstain from things that are harmful to the baby’s development such as alcohol, beer, coffee … At the same time, pregnant women also need to avoid drinking coconut water, eating laksa leaves, or bitter melon (bitter melon) … because it can cause miscarriage. pregnant.

When the fetus is 4 weeks old, the mother can continue or start exercising. Exercise will help you improve your health and endurance because your weight will increase. Exercise also helps prevent some of the aches and pains of pregnancy. Over the next few months, many women find it to be a great stress reliever. It can also make childbirth easier and less painful.

In addition, you will recover more easily after childbirth if you continue with some appropriate exercise throughout your pregnancy. Should choose safe and moderate activities, you can consider walking and swimming, very good for pregnant women.

How to relieve chest pain for pregnant women

If you feel chest pain during this period, you should fold your current bras, look for soft, underwired bras or sports bras to create a comfortable and comfortable feeling when you are pregnant. wear.

What pregnant women should do when the fetus is 4 weeks?

Choose a reputable obstetrician and make an appointment. Record the first day of your last period so your doctor can determine your due date and write down a list of questions to ask.

Mothers should learn about the pathology of both sides of the family. Your doctor will ask about chronic diseases or genetic abnormalities that run in the family.

Coming to the 4-week-old fetal development stage is also the time when the mother has passed the first month of her 40-week pregnancy journey. Mothers should pay attention to nutrition, rest regime as well as do not forget the regular antenatal check-ups to know if the fetus’s development in the coming weeks is up to standard or not.