Ovulation (the release of one or more eggs from an ovary) occurs within
a 24 hour period and only once during a menstrual cycle.
Day 1 of menstrual bleeding is the first day of the
The time interval from day 1 to ovulation may vary.
The time interval from ovulation until menstruation
is about 2 weeks.
Ovulation will occur early in a short cycle and later
in a long cycle.
Observing the cervical mucus symptom gives information
about being potentially fertile or infertile on a day by day basis.
The fertility and infertility patterns ahead of ovulation
vary from woman to woman.
Once released from the ovary, the ovum (egg) lives for
12-24 hours, unless fertilised.
Sperm cells need suitable cervical mucus to survive
and reach the ovum in the Fallopian tube.
Sperm cells may live for 3-5 days in suitable cervical
mucus. At infertile times they will survive in the vagina for only
an hour or two.
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