Let’s talk numbers! How well does Creighton Model System (CrMS ) really work for avoiding pregnancy ? Let me first reiterate that CrMS is not another form of “birth control”. It is a true method of family planning in that it can be used to achieve OR avoid pregnancy at any time. It can also be used to understand and (with the help of your NaPro trained physician) diagnose and treat gynecological health problems! But the reality is, many women (myself included when I first l