I got pg when i finally gave up..well more or less..
Having said that, im now more determined than ever and so is my OH, and i dont think its to be taken as a fact..i think its more of a ...'you get caught up in something else for a nano second and then suddenly you get pg'.., when maybe you weren't doing everything perfectly..i.e. you forget to take you prenatals a couple of times, or had a cold and didnt bd as much as you normally do..
Im sorry im not helping, just rambling on, lol.. point is thats what i think that saying means, to me anyway.
ps. Im gonna obsess all the way (in a calm and collected way of course, lol) AND i WILL get my bfp, anyway!!! So there.