Basic Facts about the Creighton Model System

• The Creighton Model System is based on day-to-day observations of the naturally occurring signs and symptoms of the fertile and infertile phases of the menstrual cycle.
• The Creighton Model System takes advantage of the changes associated with ovulation, treating each cycle as unique. It is NOT the Rhythm Method.
• Regular cycles are not necessary to use the Creighton Model System
• Women ovulate during one 24-hour period in each cycle and the egg lives for only 12 to 24 hours if there is no conception. 
• Women will experience a very definite symptom when they ovulate and for several days before, this is the time when the couple is fertile and pregnancy can occur. A woman is taught how to observe and interpret this biomarker and together the couple is taught how to use the system.
• By observing and tracking this biomarker the couple can determine the beginning and the end of fertility regardless of cycle regularity. 
• There are no internal examinations, calendars, thermometers or tests strips involved in doing these observations.
• A woman, who is breastfeeding, coming off oral contraceptives, in long cycles, or in pre-menopause can use the method with a very high degree of effectiveness.  It was often thought impossible to use a natural method in these reproductive categories. 
• The System is a unique system of fertility regulation; it is a true system of natural family planning that helps women evaluate, maintain and monitor their health.
• It is supported by over 40 years of scientific research.​