Natural FP - Mucus method
This method requires you to observe what happens to your cervical mucus. Cervical mucus is a natural lubricant produced by your cervix that aids the transportation of sperm and helps protect you against infection. The volume and consistency of your cervical mucus changes as your cycle progresses. As your eggs get ready to be released, the mucus becomes thick, sticky and yellow or white in colour. Unprotected sex during this period can lead to pregnancy. You are most likely to be fertile on the days when your mucus is clear, slippery and stretchy(like the white of a raw egg) This kind of mucus is present during ovulation. After about three days of slippery mucus, a more sticky and cloudy mucus follows. After this, a dry period with no mucus follows. You are less likely to become pregnant on the days between when you have the slippery mucus and when your period starts.
Attribution: Avallain