Sperm life in vagina

Sperm can live outside the body for varying amounts of time, depending on several factors, including the environment Ie: cervical mucus, where they end up… 9. Inside the vagina. This is an incredible feat compared to the brief lifespan of a mere few hours when no cervical mucus is present 2 , 4. This is part of why tracking cervical mucus is crucial to understanding your fertility. Studies show that if sperm enters the vagina when cervical mucus is most fertile, a few days before ovulation, pregnancy is not only possible but actually more likely 7 ,
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Pregnancy - identifying fertile days

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The Truth about Sperm Survival: How Long Do Sperm Live? | Natural Cycles

Suarez, A. At coitus, human sperm are deposited into the anterior vagina, where, to avoid vaginal acid and immune responses, they quickly contact cervical mucus and enter the cervix. Cervical mucus filters out sperm with poor morphology and motility and as such only a minority of ejaculated sperm actually enter the cervix. In the uterus, muscular contractions may enhance passage of sperm through the uterine cavity. A few thousand sperm swim through the uterotubal junctions to reach the Fallopian tubes uterine tubes, oviducts where sperm are stored in a reservoir, or at least maintained in a fertile state, by interacting with endosalpingeal oviductal epithelium. As the time of ovulation approaches, sperm become capacitated and hyperactivated, which enables them to proceed towards the tubal ampulla.
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Here's how long sperm actually lasts for after sex

When trying to become pregnant, many couples plan intercourse between days 11 to 14 of the woman's day cycle. This is when ovulation occurs. However, it is hard to know exactly when ovulation will happen. Health care providers recommend that couples who are trying to have a baby have sex between days 7 and 20 of a woman's menstrual cycle. In order to become pregnant, having sex every other day or every third day works just as well as having sex every day.
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