Week 4 begins like any other week. This is because there is a little time left before we know if it has lost its period. However, around the outside it looks normal, your body is undergoing major changes to accommodate the growing baby in her womb.
After ovulation, fertilization and conception takes place successfully; for the fourth week, the blastocyst is firmly rooted in her womb. This is the time for a further development of your baby. Normally, the body would be ready for the next menstrual period at that time; but her pregnancy will trigger new hormonal secretions that prevent this from happening.
Let’s have a detailed look at what is happening inside your body when 4 weeks of pregnancy.
Before you start reading the article, remember that each baby and pregnancy is unique and this is just generic information of what happens during 4 weeks of pregnancy. Your pregnancy or your baby’s development may be little or more different data here; that there has to be a concern for you.
Pregnancy is a delicate matter. Consult physicians confidence in Lybrate.
The two week period after ovulation is known as the luteal phase. Corpus luteum, which is a collapsed follicle that has been left behind after releasing the egg, plays an important role in the changes that occur in your body during this period. Therefore this phase is known as the luteal phase.
The corpus luteum increases progesterone production, which in turn warms the body and the uterus to the embryo. While the endometrium thickens and increases the blood supply that creates a soft mattress as a condition to catch the blastocyst when it arrives.
Your brain has already been told by your reproductive system to stop the process of menstruation. His body means what is best for your fetus through hormonal signals and triggers.
Another important change is seen in your body is the secretion of hCG (human chorionic gonadotropin) hormone. The level of hCG in your body increases rapidly during the first weeks of pregnancy; It doubles itself almost every day. This hormone is responsible for the detection of pregnancy in pregnancy tests.
In early pregnancy gestational week 4, the blastocyst settled comfortably in your uterus. Uterus has undergone sufficient changes and has made the epithelium proper uterine wall for receiving the blastocyst. If the endometrial epithelium is not well prepared for implantation, the blastocyst will fail in adhering to it.
The cell zygote which was created a few days ago now consists of an inner cell mass that constitute embryoblast, trophoblast and a primary yolk sac by the fourth week of pregnancy. The embryoblast will become an embryo and trophoblast will become the placenta.
At this time, a second cavity has appeared within the inner cell mass which later expanded to become an amniotic cavity. Most of the cells that make up the amniotic cavity derived from the inner cell mass, but some cells are provided from the trophoblast.
Placental cells are tunneling away in the lining of the uterus with its microscopic tentacles known as chorionic villi. The placenta can be fully functional by the end of the week, but currently is not able to provide food or take the waste produced by the developing fetus.
Gradually the placenta begins to grow and become embedded in the uterine wall. It is made of two different layers in this point. Placental cells are implanted themselves and creating space inside the lining of the uterus so that there is created a channel for blood to flow into the placenta developed.
The amniotic sac protect the fetus by cushioning that any possible harmful pressure that may arise within the matrix by keeping it comfortable, and prevent dehydration of fetal tissues. The yolk sac provides nutrients to the fetus, and the placenta will take time to develop. Also it begins producing red blood cells.
Your little baby is now a fetus is to establish connections with you for the long growing projections in the uterine wall. Is not it amazing? The tiny little hair like tendrils that wrap around the copious small blood vessels in the lining of the uterus, it will become the placenta. This is the time when the embryo a membrane around itself, it is also the inner layer of the developing placenta will develop.
The membrane known as corium, establishes a connection between the uterus and your baby will continue until the child’s birth. The tendrils provide oxygen and nutrients to the developing fetus until the placenta is fully formed. From now on, you are responsible for providing oxygen and nutrients to the developing baby to survive. It’s a big responsibility, but, fortunately, nature has made all mothers able to carry this duty with natural ease.
Pregnancy is a delicate matter. Consult physicians confidence in Lybrate.
Your baby is rapidly reaching the embryonic stage during the fourth week of pregnancy. Although there has been rapid cell division, all baby has managed to reach the size of a pinhead. The epiblast and hypoblast present during this stage will develop in the body and organs of your baby. All cells of the zygote were identical down to the eight-cell stage, but then began to form in embryonic stem cells. The fetus will begin operating at the end of week 4 with the help of nutrients and oxygen supplied by the blood of the mother.
During 4 weeks of pregnancy, embryonic stem cells have the option to become any specialized cell that is required for growth of the baby. They can develop into nerve cells, blood cells or muscle cells at this stage, but once they specialize, they have to perform their unique function. You can not switch to any other type of cells after this stage. From the stage of 8 identical cells because these cells can form all the different tissues required by the growing baby.
No matter what the IQ of your child will be after birth, at this stage the baby is doing a great job of changing the genes on and off with a high degree of accuracy, precision and complexity. The cells at this stage are called specialized cells because the genes that are not necessary and rekindle the genes that are necessary to do a specific work cell is off.
Muscle cells have all genes except the genes necessary to produce proteins of muscle cells. The same applies to all specialized cells that turn off genes that are not required for the specific function. The cellular actions on and off of the factors of growth continues at specific times and places as directed by the signals sent by the embryo, or precisely because of the genetic code present in it.
Imagine the tiny embryo embedded in her womb that are tuned to the signal intensities and turn on the switch of growth factors and receptors on or off according to the requirement, depending on their location. This is one of the greatest miracles of rapid evolution that takes place within its parent.
The baby is already establishing their own identity in her womb. Even from a very early stage of pregnancy, your body’s blood does not mix with the blood of your baby. The placenta pays the gatekeeper in this situation. The vascular network of your baby is developing and performing the functions of transporting blood, oxygen and nutrients that blood flow through the umbilical cord.
Finally by the end of week 4, the baby can be measured, although it is very small. The embryo is just a collection of cells measuring 0.4 mm or 1/25 of an inch, but is already functioning as a human being. Imagine the long journey to her fetus must be only a hollow ball, with only a few cells growing as a group in this step. That’s a big jump.
Although it is officially pregnant and your baby is growing in her warm belly, it is still too early to detect signs and symptoms of pregnancy to display. However, if you are fertile and planning conception should be aware of the signs and symptoms of pregnancy at 4 weeks; because this is the stage where most major in the development of your baby and takes place this also is the time when she is very vulnerable.
Knowing that you are carrying a precious fetus can help you make wise decisions early in their pregnancy. Here are some signs that can be considered in week 4, but know that they are highly individualized. Some women experience all symptoms of pregnancy, while others sail through pregnancy with only a blow to display. Do not panic if these symptoms are present or absent.
You can observe implantation bleeding that can occur shortly before the arrival time of their period. This is also called as the location. should not be confused with menstrual bleeding that can be disappointing if you are trying to conceive.
When the blastocyst embeds itself in the uterine wall, in some women accompanied by a slight smearing. But if there are no spots, just I know that you are not one of them. Spotting is not necessary during implantation.
If you have a short menstrual cycle, then towards the end of week 4 you will know that your monthly visitor has not arrived. Now that you know the symptoms 4th week of pregnancy, we will see a little care and advice.
The fourth week is the time when the stage is being set for the development of your baby heart, head, brain, spinal cord, tissues, organs, hair, teeth, muscles and bones. Your baby has firmly established its relationship with you for 36 weeks. Be careful to make the best of the connection and help your baby grow healthy and safe. Here are some tips that would have a positive effect on her pregnancy.
Even after safe implantation in the uterus, the possibility that you have an early miscarriage is about 20-30%. So take care of yourself during the fourth week, avoiding activities and foods that can felicitate the unfortunate event.
I hope it is clear symptoms 4 weeks pregnant now and will follow the advice and care. Practice happy !!