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Medical Disclaimer: The content in this article is not intended to be a substitute for professional medical advice, diagnosis, or treatment. It is important to always seek the advice of your physician ...

Your period does not always arrive or leave when you expect it to. A missed period happens when ovulation (release of an egg) does not occur, or when hormonal changes come in the way of the normal ...

Add Yahoo as a preferred source to see more of our stories on Google. FotoDuets/Getty Images For many people, a missed period is the first signal that they're pregnant. However, this often isn't the ...

If you're waiting for a late period, there's one thought that's likely going through your mind:&nbsp;<em>Am I pregnant?</em> You may miss a period for one or two ...