Ovulazione: cos’è, calcolo e sintomi per riconoscerla

Che cos’è l’ovulazione

Conoscere il nostro ciclo mestruale e in particolare l’ovulazione, ci permette di calcolare i giorni fertili e aumentare la possibilità di concepimento. Ma che cos’è l’ovulazione? È il momento in una delle due ovaie il follicolo maturo espelle l’ovulo, che entra nella tuba di Falloppio, dove potrà poi essere fecondato.

Come si calcola l’ovulazione

L’ovulazione dura 24 ore ed è preceduta dalla fase follicolare, che dura 14 giorni a partire dal primo giorno delle mestruazioni, durante la quale alcuni follicoli maturano, ma solo uno diventa ovocita, ed è seguita dalla fase luteale, anch’essa di 14 giorni, durante la quale l’ovulo secerne progesterone, che prepara l’utero alla fecondazione. Tuttavia, non tutte le donne hanno un ciclo regolare di 28 giorni, ma la fase luteale dura sempre 14-15 giorni, quindi per calcolare l’ovulazione bisogna sottrarre alla durata totale media del ciclo questi 14 giorni. Se, per esempio, il vostro ciclo dura 30 giorni, l’ovulazione avverrà il sedicesimo giorno.

Come calcolare i giorni fertili

Per aumentare le possibilità di concepimento, è quindi importante calcolare non solo l’ovulazione, ma i giorni fertili. Per farlo bisogna sapere che l’ovulo ha una vita di circa 12-24 ore, mentre gli spermatozoi sopravvivono nel collo dell’utero per 3-5 giorni. I giorni fertili, quindi, vanno da quattro prima dell’ovulazione alle 24 ore successive, per un totale di sei giorni.

Ovulazione: sintomi più frequenti

Oltre che dal calcolo dei giorni, è possibile riconoscere l’ovulazione anche da alcuni sintomi tipici, che sono: aumento della temperatura basale (dai 3 ai 5 decimi di grado, misurandola sempre appena sveglie al mattino), dolori al basso ventre in corrispondenza dell’ovaia che sta ovulando, muco cervicale chiaro e fluido. Tuttavia, questi sintomi non si presentano in tutte le donne. Per conoscere con certezza il giorno dell’ovulazione si può effettuare un semplice test che si acquista in farmacia.

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