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" Can having sex during my period affect my flow? Surprisingly, if you have an orgasm, it might get menstruation over with more quickly. At the start of your period, hormone like substances called prostaglandins trigger contractions, which cause blood and uterine lining to shed. When you climax, you can also experience intense -- though way more fun -- uterine contractions. &amp;quot;Although no studies have been done on this, it&amp;#039;s likely that menstrual blood in the uterus is squeezed out during orgasm,&amp;quot; says Dee Fenner, M.D., director of gynecology in the department of ob-gyn at the University of Michigan in Ann Arbor. So your flow may be heavier immediately after your orgasm but then end sooner than it would have otherwise. "^^<http://www.w3.org/2001/XMLSchema#string>
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