During pregnancy, progesterone in the body increases with each week, so to determine the hormone use a special table.

Progesterone (from lat. pro - before and English. gesta (tion) - pregnancy) - a steroid hormone of a group of progestogens (progestins), responsible for the normal functioning of the reproductive system. In women, progesterone is produced by the ovaries and adrenal cortex, and during pregnancy - by the placenta.

At the onset of pregnancy, the amount of the hormone in the blood increases. The majority of progesterone in non-pregnant women is produced by the corpus luteum, a temporary endocrine gland formed after ovulation in the destroyed follicle and regressing within 14 days after formation. The hormone is synthesized in two stages, starting with cholesterol. Control the synthesis of luteinizing and follicle-stimulating hormones of the pituitary gland. In pregnancy, production is stimulated by human chorionic gonadotropin (hCG).

Increasing the level of the hormone at the onset of pregnancy is physiological, but if its concentration in the blood goes beyond the upper limit of the norm, it is necessary to consult a doctor and find out the cause of this condition.

In women, the concentration of the hormone varies depending on the phase of the menstrual cycle, as well as the pregnancy and its term. The level of the hormone is affected by the process of development and regression of the yellow body.

The minimum amount of the hormone is observed in the follicular phase, the increase occurs on the day before ovulation and remains unchanged during the luteal phase. Then the cycle repeats, the follicular phase comes, the level of the hormone decreases. If conception occurs, the yellow body continues to produce progesterone before the 16th week, after which the placenta takes over this role. Placental secretion of the hormone is proportional to the weight of the placenta. The growth of the placenta leads to an increase in progesterone, its level increases with each week of pregnancy.

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