To determine the period of ovulation using a variety of tests based on various changes in the female body during ovulation. To understand the degree of efficiency and reliability of various tests, ovulation must A brief overview of the physiological changes occurring. Analysis of characteristics of cervical mucus. During the menstrual cycle due to the effects of estrogen and progesterone properties and quantity of cervical mucus change. The largest number of stands in the middle of the cycle, during ovulation, and the smallest – during menstruation. Symptom of the tension of mucus.
If tweezers to get the mucus out of the cervical canal, then under careful cultivation of his of mucus form a thread, whose length depends on the viscosity of mucus. Maximum length of the filament observed in the ovulation period, when the viscosity of mucus is highest. The length of the filament is measured in inches – the higher the level of estrogen, the greater the its length. In the second phase of the menstrual cycle symptom string tension decreases and disappears before menstruation. Symptom of "pupil." Throughout the menstrual cycle under the influence of estrogen changes muscle tone of the cervix with a diameter of the external opening of the cervical canal. Expansion of the hole and the appearance of mucus in it begins with 8-9 days of the menstrual cycle, up to 14 days maximum aperture extends (up to 3-6 mm in diameter). A drop of mucus protruding from it, illuminated against the backdrop of pink mucosa similar to "pupil." In the days of mucus begins to decrease and the 18-20 day cycle, this symptom disappears, the cervix becomes "dry." Symptom "Fern." Cervical mucus when dried in air has the ability to crystallize. The intensity of crystallization depends on the phase of the menstrual cycle, ie from the estrogen.
Mucus is taken out with forceps, which is introduced into the cervical canal to a depth of 5 mm, and then applied onto a glass slide, dried and examined under a microscope. During the period of ovulation during the crystallization pattern of leafy ferns. This property is in crystallization has a tear, is a basis of common work in our time-test microscope to determine ovulation. Change in basal body temperature (BT) is based on the temperature rise under the influence hormone progesterone. This test is a simple, easily accessible and fairly objective, but one should remember that it can affect any cause of non-hormonal nature (illness, accompanied by an increase body temperature). In addition, measurement of BT should be carried out at least for 2-3 menstrual cycles – only this method can be diagnostically valuable. The big disadvantage of the method of BT is that to evaluate Measurements can provide a doctor.