For sure - if not getting pregnant is a high priority for you and you are just coming off hormones, I agree that you will likely need a back-up method or a very long period of abstaining until you figure out charting. It can take 3-4 normal (your normal) cycles to get the hang of charting, and you may not have your normal cycles immediately, so you should not rely exclusively on charting at the beginning. You also shouldn't wait to see your first period because you ovulate before then - you could catch that first egg and not see a period because you are pregnant.
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