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Pregnancy and all about it on the site

Pregnancy

This is a complex physiological process in the body of a woman, as a result of which a new living organism develops from a fertilized egg.

The duration of pregnancy in healthy women is on the average 280 days (from 266 to 294), or 40 weeks (38-42), 10 obstetric or 9 calendar months.

Everything begins with fertilization, i.e. fusion of an egg with a sperm. After the fusion, the nucleus of the egg has a complete set of chromosomes and begins to be divided in the first 24 hours. By the end of the third day, the embryo consists of 16-32 blastomeres and enters the uterus. Further, it is implanted into the uterine mucosa and further growth.


Indicate the first day of the last menstruation:

The resulting pregnancy leads to a reorganization of the functions of the whole organism, which definitely affects the woman's state of health. The first signs experts call hypothetical. These include:

  • nausea and vomiting, especially in the morning;
  • change in taste and smell sensations;
  • disorders of the nervous system irritability, drowsiness, fatigue, dizziness;
  • increased frequency of urination, engorgement of the mammary glands.

Probable signs include:

  • cessation of menstruation;
  • positive tests;
  • change in the consistency, size and shape of the uterus.

Hormonal changes in the mother's body and growing uterus inevitably affect the state of health of a woman.

Endocrine glands produce hormones necessary for the normal development of pregnancy and its preservation. These biologically active substances reduce the tone of the uterus, in parallel affect the gastrointestinal tract and the walls of the vessels, leading to constipation, nausea, varicose veins.

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