3 week of pregnancy: signs, sensations, fetus at week 3

3 week of pregnancy for obstetric calculations is the period of fertilization. This week, the egg of the mother finally meets with the sperm of the pope and as a result of their interaction a new life arises.

From the moment of intimacy to fertilization it takes an average of several hours to several days - it all depends on whether ovulation has already occurred or not, perhaps the spermatozoa will have to wait for some time to wait for the egg in the fallopian tube, where the female gamete comes from the ovaries.In any case, only one "tadpole" will penetrate into the ovule - the strongest and hardiest.For all other male gametes, the entrance to it will be closed.

Contents: Sensations at 3rd week of pregnancy Child at 3rd week of pregnancy Problems that arise What should I look for?3 week of pregnancy: ultrasound and analysis Recommended to read:

After conception begins a complex and long process of intrauterine development.Three stages are conventionally distinguished:

• The period of blastogenesis is the first week after fertilization.
• The embryonic period that begins after implantation of the fetal egg in the uterus and lasts until the end of the first trimester.
• Fertile period - the period from the 12th week of pregnancy until the birth of a child.

On average, these three periods last 280 days - 40 weeks or 10 obstetric months.

Sensations at week 3 of pregnancy

At the beginning of the 3rd week of pregnancy, the mother is ovulating( in some women, it could have occurred at the end of 2 weeks).This physiological process can be accompanied by soreness in the lower abdomen, an increase in the number of vaginal discharge( they become transparent and viscous, like egg white), they can have blood veins. In general, the woman feels good.

If everything goes well, the fertilization of the egg takes place on the same week, that is, pregnancy begins.The future mother does not know about this yet, but she hopes and waits.There are some special symptoms indicating that the miracle has happened, as a rule, not yet.

Child at week 3 of pregnancy

At 3 weeks of pregnancy, you can safely talk about the baby. Its development began with the fusion of the nuclei of two sex cells( sperm and egg) and the formation of one common cell - the zygote.Zygote, moving along the fallopian tube( it is in this organ that fertilization occurs) into the uterus, is divided.First, 2 cells are blastomeres, they divide by 2 more, and so on. About 3-4 days after conception, the future baby consists of hundreds of cells and is called morula.

At the next stage, a cavity with liquid starts to form inside the morula, and the morula gradually transforms into a blastocyst. Cells covering the blastocyst will subsequently form a trophoblast - the precursor of the chorion and the placenta, and the inner cells - the embryoblast, from which the embryo will develop.

If fertilization occurred at the beginning of 3 weeks, the fetal egg( blastocyst) will be already in the uterus and the implantation process will begin - insertion into the endometrium.After implantation, a strong bond will be established between the mother and the baby, the blood vessels of the chorion will germinate into the mucous layer of the uterus, through them the baby will both eat and breathe.

The size of the baby( blastocysts) at 3 weeks of pregnancy does not exceed 0.1 mm.

Emerging problems

One of the main and most formidable problems is the ectopic pregnancy .A fetal egg can for some reason be implanted in the fallopian tube, and not in the uterus.In addition, the blastocyst can attach to the ovary or even get into the abdominal cavity.In all such situations, an ectopic pregnancy is noted.Its outcome is obvious - the child can not develop in such conditions.Ectopic pregnancy has to be disposed of, otherwise there may be serious bleeding that threatens the life of the patient.

Ectopic pregnancy is most common in women with chronic inflammatory diseases and anomalies of the uterus and appendages, as well as in patients undergoing IVF( in vitro fertilization).

The second common problem of the end of the 3rd week of pregnancy is clotting. Its appearance may be associated with the implantation of a fetal egg or some kind of gynecological diseases.In any case, you should consult a gynecologist.

What should I look for?

3 and 4 weeks of gestation( 1 and 2 weeks from conception) are the first critical period of embryogenesis, that is, the period of the most sensitive child's future sensitivity to negative factors.In this regard, if pregnancy is possible, a woman must behave very carefully, otherwise miscarriage may occur or the risk of having a baby with malformations may increase significantly.

The most unfavorable factors for a pregnant woman include:

• X-ray radiation( if there is at least the slightest probability of pregnancy, it is better to refuse radiology examination).
• Medicinal products.Especially dangerous are some antiviral drugs, analgesics( including aspirin as well), antibiotics, antifungal and anthelmintics, hypotensive and psychotropic medications, vitamin A.
• Chemical substances( for example, if a woman works in some kind of harmful production).
• Infections - rubella, toxoplasmosis and others.
• Alcohol, nicotine, drugs.

From the impact of these factors, the expectant mother must protect herself in the first place.In addition, it is desirable to avoid stressful situations, severe overwork.

3 week of pregnancy: ultrasound and analysis

It is impossible to detect pregnancy on the 3rd obstetric week by any of the existing methods of research. You still can not see anything on ultrasound( the doctor can only state that ovulation has occurred and that the uterus is ready to receive the fetal egg in case of conception), the blood test for chorionic gonadotropin is also of little informative.Well, home pregnancy tests in general are impractical to apply until the first day of a delay in menstruation.Therefore, all that remains for future parents is to wait and enjoy life.

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Zubkova Olga Sergeevna, medical reviewer, epidemiologist