I just got a prescription from my doctor for ortho evra (the patch), and she told me to apply the first patch on my 6th or 7th day after my period starts. But when I got home and read the massive leaflet in the box, it says to apply the first patch within 24 hours of starting your period. Which should I do? And will it mess up my system if i just do what the pamphlet says (24 hour option)?