Cervical mucus is a substance secreted in the cervix that undergoes changes in density, color and texture throughout the cycle, depending on hormonal changes. Variations in cervical mucus predict the period of greatest probability for conception, along with basal body temperature and LH secretion. According to the characteristics of the mucus we can identify the phases of the cycle:
- Follicular phase
- begins on the first day of menstruation and ends with ovulation. Cervical mucus is scant and clear, with a liquid texture. As the days go by, a greater amount of mucus is perceived and more consistent. In this phase the body prepares for implantation.
- Ovulation phase
- the mucus is more elastic, with a consistency similar to egg white. In this phase, the ovum starts its way through the fallopian tubes towards the uterus and it is the moment in which the ovum can be fertilized.
- Luteal phase
- cervical mucus takes on a whitish color and thickens, due to an increase in progesterone secretion, characteristic of this phase of the cycle.
Not perceiving changes in cervical mucus throughout the cycle should be a warning sign to go to a specialist, since there may be alterations related to mucus that can be the cause of infertility. A low level of estrogen causes no change in mucus throughout the cycle; certain sexually transmitted diseases, such as chlamydia or gonorrhea, cause inflammation in the area of the cervix and change the mucus. Some medications have side effects that can affect cervical mucus, including antihistamines, cold medications, antidepressants, and clomiphene, among others.
Therefore, if changes in cervical mucus are not perceived during the cycle, it is advisable to go to a specialist who will carry out a thorough examination to identify the causes.
