Now, when practically there is an intimate stage in every feature film, when children get used to the endless informative stream about most frank one yet from small (junior) years, most frightful that appears that these comprehensively developed children and teenagers quite know nothing about itself. And herein reason of early abortions, frequent inflammatory diseases, and, in subsequent: womanish and masculine fruitlessness, early exhaustion of organs of the endocrine system, pathology of development of already desirable child.
 Nature is wise and rational. She thought of and organized the unique cycle of alternation hormonal of dependent processes in a womanish organism which an ovule ripens during, goes in the trip on an uterine tube, prepares to meeting with a spermatozoon, and then, the with care already impregnated and divided cage heads for the place of its introduction in an uterus. A uterus in the turn prepares mucous to the process of implantation: blood vessels overgrow, new glands appear. In an ovary a new, hormonal-active gland develops is a yellow body, which under influencing of regulative hormones of hypophysis, synthesizes the matters necessary for implantation and pregnancy. If pregnancy does not come, mucous uteruses all cycle is torn away repeats oneself again. Both a moon day in day out walks up the pedestal of nightly sky in different face and woman in every day of the life, preparing to maternity, newly wonderful.
A competent and attentive gynecologist, talking with a woman and putting her a few leading questions, can faultlessly define the day of menstrual cycle. In fact at her: exterior, taste predilection, common feel, desires is all depends on the day of cycle.
Many our misfortunes are from ignorance. But not sinful to take interest to those, with respect to you directly. And protection from undesirable pregnancy, with the obligatory saving, both health and harmonious matrimonial relations - must interest clever and loving men and women.
At choice method of contraception such factors have influence, as irregular sexual life, presence of concomitant somatic pathology. There are a few principles of contraception:
1. The physiological method of contraception is abstention from sexual life in "dangerous days". This method is yet named a calendar method. He befits for women above-ground by regular sexual life with one partner, on condition of regular menstrual cycle. A method possesses large probability of offensive of unwelcome pregnancy and does not protect from the diseases transmissible by a sexual way.
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