You start to mature and your first menstrual periods appear. Do you know what is really happening in your body and how it affects your mood? Do you know that the variable length of your menstrual cycles may develop up to 25 years and during this time irregular periods are normal? Do you know that you can observe the course of your menstrual cycle and measure it based on natural indications of fertility, so you will be able to accurately determine the fertile and inferile days?
As you are becoming a woman, you need to know:
Why natural methods of family planning can be an alternative to contraception?