There are many different types of vaginal discharges, one of which is also cervical mucus. The type of mucus that your body produces provides indications regarding where you are in your menstrual cycle and hence when you are considered most fertile. You can check your cervical mucus using your fingers or toilet paper. During the days that you are not fertile, the mucus from your cervix will be thick and sticky (similar consistency to sticky rice). The day before and the day of ovulation, during which you are most fertile, you will have more secretions and the mucus should be stretchy and resemble raw egg white. The change in the amount and also the consistency of the cervical mucus is due to the increase in the level of estrogens that occurs during ovulation.