At 3 weeks of pregnancy the magic moment of fertilization really takes place when you are pregnant. The first sperm that reaches the egg penetrates the external barrier until it enters its nucleus and reaches the fertilization that gives rise to a new being.
The moment both gametes are fused, each contributing its 23 chromosomes, there is a unique genetic combination that determines the baby’s DNA and, of course, its sex.
At just 3 weeks pregnant, the heart is a group of tiny, lethargic muscle cells, but over the course of 22 days it bursts with life. A cell spontaneously contracts, scatters its neighbors, and starts a chain reaction until all the cells in the heart begin to beat. Isn’t it amazing? It’s as if some encourage others to dance! These cells are programmed to control the baby’s heartbeat until the brain takes over the next few weeks.
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Your baby at 3 weeks pregnant:
A tiny little seed – this is what your future baby looks like right now. The egg has just been fertilized by the sperm and over the next seven days it will divide into several cells, not increasing in size, but starting a long journey. It will descend the tube and go towards the uterus. There, in the form of a blastocyst – a ball of cells filled with fluid – it will attach itself to the uterine wall and continue its development.
In this 3 weeks of pregnancy and the next, the egg will be fed by nutrients present in the fallopian tube and uterus. Just to give you an idea, right now your baby measures about 0.15 mm, the size of a pin head. Despite being so small, in its formation, what will be the fetal parts, the placenta and the water bag are already configured.
What forms at 3 weeks of pregnancy:
At 3 weeks of gestation , the process of gastrulation begins. It is the formation of germ layers of the embryo, also called layers of primary tissues, which are:
- Ectoderm: outer layer that surrounds the embryo.
- Mesoderm: layer of cells that make up the top of the blastocyst.
- Endoderm: innermost layer of cells of the embryonic group.
At 3 weeks of gestation , the extremes also begin to be delimited:
Cephalic region that, together with a thin filament, will constitute the central nervous system.
- Ventral region;
- Left side;
- Dorsal region;
- Right side.
Your pregnancy at 3 weeks pregnant:
The most important thing now is for you to dribble your anxiety. It’s still too early for you to realize you’re pregnant. Nausea, fatigue and the frequent urge to urinate – classic symptoms of early pregnancy – will only appear in the next few weeks. But this, of course, is very variable. There are women, for example, who spend the first weeks of pregnancy without even feeling Nausea .
Others realize that there is something different about them because they begin to hate foods and even smells they once loved. It is also common in this period to have a small bleeding, a consequence of implantation, when the blastocyst penetrates the uterine mucosa, initiating its development. Nothing to worry about, everything is going smoothly.
How your body changes at 3 weeks pregnant:
If you find yourself at 3 weeks’ gestation , you should know that at this immediate post-fertilization stage, the developing embryo will report its existence to the pituitary gland in the brain and deactivate the menstrual cycle, something that will pass hormone production. human chorionic gonadotropin (HCG), which in turn maintains high levels of progesterone, which is essential for embryo survival and proper pregnancy development.
While there is still no clear evidence of pregnancy, since you haven’t had time to check if your period has been removed or not, it’s true that there are some signs that everything is on track. For starters, some women have a small amount of bleeding at the time of implantation, although don’t worry, which is usually a small amount.
It is still too early to notice an increase in breast size, although some women claim it. What can be done, however, is an increased feeling of drowsiness and tiredness, irritability, changes in mood and some feeling of nausea, as well as changes in taste – often along with a feeling of dislike in front of the patient. some smells and abundant salivation.
Signs of 3 weeks of pregnancy:
The physical and psychological symptoms you experience are likely to be very similar to those of a normal menstrual cycle. If the pregnancy is planned and you were looking for a baby voluntarily, it is a time of some anxiety and hope to anticipate the possibility of getting pregnant.
It is a good time to consider adopting healthy eating habits and avoiding the consumption of toxic substances. It’s also important to avoid taking medication until you’ve confirmed whether or not you’re pregnant, as some medications can be harmful to your unborn baby.
At this time, the signs of pregnancy begin to become more evident, realizing symptoms such as:
- fatigue ;
- Hypersensitivity in the breasts;
Feeding at 3 weeks of pregnancy:
It is necessary to take care of food, ensuring a sufficient intake of food for the nutritional contribution that will be necessary for the correct development of the fetus. In addition, consumption of foods that contain protein, iron , calcium and folic acid has the following advantages:
- Prevents the onset of Anemia , thanks to increased blood flow.
- Calcium promotes the growth and development of healthy teeth and bones.
- Proteins create new tissues.
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Intake of folic acid , before and during pregnancy, reduces the risk of the baby being born with spina bifida or cleft lip in more than half of cases.