3 week of pregnancy are the term when in most cases future mom still does not even suspect about pregnancy. Though small life already arose.
Fruit on the 3rd week of pregnancy
On this term of future child it is still difficult to call the child. From the moment of fertilization there passed about one week for which the impregnated ovum moved on a fallopian pipe and it appeared in a uterus cavity. During this week future child is called by a zygote. During this week the cages constantly shared. At first two cages, then four, further 16 and so on were formed. This process is studied for a long time. Embryologists and reproduktolog constantly see it in protocols of in vitro fertilization.
In the course of pass on a uterine tube the zygote turns into a morula. And the blastocyst already gets into a uterus cavity. Its sizes are about 0.1 millimeter. And now its task is to be attached to the woman's endometrium. This process though seems such small, but is one of the most important. If the blastocyst is attached not there where it is necessary (in a fallopian pipe or in the pocket formed after a tubektomiya), then subsequently the woman quickly will need gynecologic operation.
Unfortunately, about 75% of the impregnated ova do not take root. It can be promoted by the following reasons:
- Defects at cell fission.
- Violations of a hormonal background at the woman.
- The diseases connected with endometrium (inflammations, an endometritis, an endometrium giperplaziya, a hypoplasia, new growths and another).
- Diseases, sexually transmitted.
- Infections in the woman's organism.
In certain cases the blastocyst cannot be attached to endometrium without any reasons. Therefore even when carrying out ECO the woman cannot be sure that pregnancy precisely will occur.
If the blastocyst was not attached, then at this stage it is not considered an abortion. The woman does not even learn that she was almost pregnant, cages just will leave an organism together with come in time monthly.
If everything passes normally, then the blastocyst which was fixed in a uterus cavity, every hour increases quantity of cages in itself. And also the fact that these cages universal is interesting. Any of them can become in the future both a liver, and a stomach and even skin.
When the quantity of cages increases to the necessary size, the blastocyst begins to be extended and passes into a stage of an embryonic disk. Already by the end of this week the disk will be curtailed and on one end the head, and on the second an embryo tail will begin to develop.
On term three weeks the organism of future mother perceives future child as a foreign matter and tries to get rid of it. If the kid overcomes these difficulties, then it means that in 9 months the new person will be born.
Feelings of the woman on the 3rd week of pregnancy?
On this term future mom does not know about existence of new life in herself yet. According to the female calendar until the end of a menstrual cycle about a week more. And the woman can throw off all possible symptoms of pregnancy on a premenstrual syndrome.
As soon as the embryo was attached to a uterus, reorganization of an organism and hormonal background begins. At the woman the following changes in a state can result:
- Slight increase of the general body temperature. As much as possible it can rise up to 37.5 wasps. Temperature increase is connected with increase in a progesterone hormone organism.
- Because of jump of hormones there can be heat-spots and change skin type.
- Irritability and emotional instability. The tearfulness because of any trifle is possible.
- Weak nagging pains in the bottom of a stomach.
- Nausea and intolerance of smells.
Except everything listed, at the woman the breast can bulk up. She can often run in a toilet. In general the state is very similar to a premenstrual syndrome.
What allocations can appear on the 3rd obstetric week?
During implantation of a blastocyst there can be bleedings. The mucous membrane of endometrium at this moment is affected therefore its integrity is broken. Vessels at this moment can also suffer. Their main difference from menstrual bleedings — the beginning. Attachment of a blastocyst happens approximately for 6-12 day after an ovulation. And the periods will begin only in 14 days.
It is easy to distinguish also implantation bleedings from periods on the following signs:
- Duration of periods averages from 3 to 6 days. Implantation bleedings last only several hours. In rare instances their duration can be increased at most up to two days.
- Intensity of allocations at bleeding as a result of implantation very weak. There can be only several drops of blood on underwear. The periods are much stronger.
- Color of blood during implantation varies from light pink to pale brown.
All above-mentioned is characteristic at the normal course of pregnancy. If implantation is done out of a uterus, then there can be following symptoms:
- During implantation there can be sharp cutting pains in the bottom of a stomach.
- Color of allocation becomes brown. It is connected with the fact that blood before leaving, passes on fallopian pipes and is oxidized.
- There can be severe dizziness and nausea.
Besides periods and implantation bleeding, emergence of blood from a genital tract can be a symptom of one of the following diseases and states:
- Diseases, sexually transmitted.
- Injuries after sexual intercourse.
- Vaginosis, inflammation in a cavity of a uterus and endometriosis.
- New growths.
- Abortion on early term.
- Hormonal violation.
Therefore in case of blood allocations not in time of periods, it is worth addressing the gynecologist.
Whether it is possible to do the test for pregnancy on the 3rd week of pregnancy?
At the moment when the blastocyst was attached to a uterus, release of special hormone of pregnant women — a horionichesky gonadotrophin of the person begins. Exactly thanks to it there is an emergence of the first chorions — fibers which will become later a placenta. Also HGCh influences a yellow body so that there was a producing progesterone. Progesterone in turn gives a signal in the woman's hypophysis that there occurred pregnancy and an ovulation to anything now. Such work of hormones will be continued approximately till sixteenth week of pregnancy. Then already placenta will be able to form necessary amount of progesterone and importance of HGCh hormone is lost.
It is possible to define HGCh in blood or in urine. Directly after attachment of a blastocyst, hgch already begins to appear in blood. Concentration its very small, but each 48 hours it doubles approximately.
In urine concentration 10 times less than in blood. Standard tests for pregnancy assume concentration of this hormone in urine not less 25th honey/ml. And such quantity or bigger will be observed approximately for the fourteenth day after fertilization, that is for the first day of a delay of estimated periods. If to make the test for pregnancy before the put term, then the indicator can be false-negative and it is necessary to change it later.
In the presence of pregnancy, literally in 2 weeks, concentration of HGCh has to be at least 5 international units on liter. And if to take a blood test on HGCh in a day repeatedly, then it will double. If for the second time the concentration is increased by the smaller number of units, is equal to the previous indicator or will decrease, then most likely it either extra-uterine pregnancy, or a blastocyst stopped the development and the periods will begin soon.