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Can Having Sex One Day before an Expected Menstruation Delay

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ok so this guy and i had sex the day before my period was supposed to start....could that make my period late??? i knwo that may sound really stupid but im too young for a baby!!! PLEASE HELP!!!!

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replied April 11th, 2006
Early Pregnancy Signs and Symptoms Answer A721
A late period can be caused by many reasons. Mental stress and anxiety can delay menstruation, for example. Having sex a day before an expected period will not delay menstruation. Pregnancy is the most common reason for late (missed) periods, but not in every case. You can take a pregnancy test to exclude pregnancy. If you are pregnant, conception would have occurred a couple of weeks before...not during the sex you had one day before your expected period.
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