As a woman, you know how important it is to predict when your period will arrive. With this information, you’ll know the best time to have intercourse if you want to conceive — or the best time not to have sex if you want to avoid getting pregnant. You can also organize your schedule to avoid physically intensive activities during the days when you have your period.
Fortunately, calculating your period is not rocket science. With a few months of charting and some computations, you can predict when your next period will arrive.