Calendar of pregnancy - the first trimester
The second trimester, week a week
Third pregnancy trimester
Contraceptive methods
Care in the pregnancy
Control panel
Multiple pregnancy
I embarrass gemelar
Feeding
Pregnancy symptoms
Gymnastics
Sex and pregnancy
Exercises and efforts
Beauty and pregnancy
Risks in the pregnancy
Cellulitis
Makeup for the spots of the pregnancy
Hair
I embarrass ectópico
Prevention in the pregnancy
Screening I preset off
Studies in the pregnancy
How to remain a pregnant woman?
Beginning
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The pregnancy
How does the pregnancy take place?
During a sexual relation million sperms (masculine sexual cell) enter across the vagina of the woman and climb for the womb up to coming to the Horns of Falopio. If the woman is in his fertile period (days previous and later to the ovulation) one of these sperms can come across with the ovum (feminine sexual cell) and fertilize it. The sperm penetrates in the citoplasma of the ovum. Once it reaches the nucleus, where the genetic information is located, two cells fuse, exchange chromosomes and generate the first cell of the baby, the egg or cigota from which the others will form. One day after the merger, the cells of the egg begin to split (it is still in the Horn of Falopio).
Of very synthetic form, we will say that first it splits into 2 equal parts, that in turn it splits into 4, and then into 8, and then into 16, and this way successively up to completing the process. All this happens while the egg descends from the horn of Falopio up to the womb, this happens approximately to the fourth day. The cells gather together in the shape of mulberry. Then they split into 2 groups. The day pupils (trofoblasto) responsible for the future afterbirth, and the interns (blastocito) that will give place to the embryo. Then the membranes will begin to form day pupil - corión - and he interns - amnios - that will form the bag where he will inhabit the embryo and inside the same one, the amniotic liquid.
What is the pregnancy?
The pregnancy in strict sense begins when the embryo manages to be implanted in the endometrio. The pregnancy in this instance is still not perceived by the mother. The pregnancy symptoms in the fifth week can be almost imperceptible for some women. At first they can be confused with the premenstrual symptoms: increase and pain of breasts, weariness, increase of the vaginal secretion, emotive sensibility. Then: absence of the menstrual period, I am unpleasant for some type of food, change in the smell, a certain metallic taste in the mouth, morning sickness, and up to vomiting.
From the implant of the embryo in the endometrio, the communication mother - son will be across the afterbirth that it joins the embryo by means of the umbilical cord. Where there will be transported oxygen and nutrients of the mom to the baby, and from the baby to the mom the dioxide of carbon and the products of undone of the fetal metabolism.
The pregnancy lasts between 36 and 40 weeks counting from the date of the last menstruation of the mom. Or that typically hard 38 weeks counting from the fertilization (that happens 2 weeks after the menstruation, which is when the woman ovulates) that's why although the embryo has for example 10 weeks, we will speak about a pregnancy of 12 weeks.
The pregnancy produces in the woman a hormonal revolution that will turn out to be reflected in the corporal and mental changes of the mom. What it is necessary to bear in mind is that these changes in the pregnancy are normal, and that everything will return to the normality when the baby is born.
Some changes during the pregnancy can be beneficial, as for example: more abundant hair and with more I shine, the firmest breast, the hardest fingernails, not to have the need to be depilated by so much frequency.
On the other hand, there are other changes during the pregnancy that can be annoying, as for example: backache, constipation, varicose veins, haemorrhoids, more transpiration than the habitual one, morning sickness and vomiting in the first trimester.
Not all the pregnancies are equal, and it spends it not to all the women earlier enumerated. So if you are pregnant, arm with patience to tolerate the inconveniences, and he enjoys of this unrepeatable moment, which is to procreate a life.
The first medical control
If it is in couple, it is advisable that accompanies you in this first interview. Since the doctor will ask on medical and familiar precedents of the two, if some genetic risk should exist. It is information that can influence the pregnancy. It has noted down this information, and the doubts that you have. The obstetra will verify your weight, height and blood pressure. And it will realize a vaginal tact and a cytology, if he believes it necessarily.
Also he will calculate the probable date of childbearing, being based in the date of your last menstruation. An urine analysis will prescribe you also, to discard the possibility of infection, and a blood test to verify your physical state. (To know if you have anemia, diabetes), to determine the factor Rh, to find out if you are immunized opposite to illnesses that could affect your baby (like toxoplasmosis, German measles, hepatitis), and to find out if you are or not a bearer of antibodies of the AIDS.
If everything is fine the consultation with your doctor will be at first a 1 time a month, by the end of the pregnancy the visits will be with more frequency up to the probable date of childbearing. The first ultrasound scan is indicated usually between the seventh and ninth week of pregnancy.
This study serves to verify the state of the womb and internal organs, it is proved also if the embryo is well well-established and it develops with normality. And it gives a quite approximate idea of the date of childbearing.
This study will recur sometimes more during the pregnancy, according to the criterion of your doctor.
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