Fertility Calendar

The first day of the last menstrual period:

 Menstruation Days   Ovulation Days (High Fertility)
Cycle length : Days Infertile Days   Probability Of Boy Conception
Menstruation length: Days Fertile Days Probability Of Girl Conception
   

*** This fertility calendar is not a substitute for professional medical advice, and may not represent your individual medical situation; therefore it should not be used as a method to prevent pregnancy.