So, I bought some and read the instructions but (ahen), I'm a bit lost. If I have this right, my cycle is 31 days so I wee on a stick on day 14 but how often do I do it after that and what does it say? It doesn't actually specify what comes up on the test but presumably it doesn't state: 'don't bother shaving' or 'get to it' so what am I looking for exactly?