Animation: the menstrual cycle and your body's natural signal of fertility - cervical mucus

This animation explains the changes in cervical mucus that you may experience throughout your menstrual cycle. Once you're familiar with these changes you'll be able to identify the fertile and infertile times in your cycles. You can use this information to optimise your chances of conceiving, or you can use it to avoid pregnancy naturally. It can also help you to safeguard your reproductive health because you'll learn to recognise any changes that might need early medical investigation.