Days 1-5 Menstruation

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Days 1-5 Menstruation
Menstruation occurs and the lining of the
uterus, with a small amount of blood, leaves
the body. At this time another egg is
maturing in the ovary.
Days 6-15 After Menstruation
 The lining of the uterus repairs itself and
once again prepares for a fertilized egg,
Around days 13-15 an egg is released from
the ovary. This is called Ovulation.
Days 16-28 Before Menstruation
 If the egg is fertilized by the male sperm cell,
it embeds itself in the wall of the uterus. If
the egg is not fertilized, the blood vessels in
the wall of the uterus shrink and break
down. Then menstruation begins again.
Female Menstrual Cycle
 Ovulation = Day 14
 Egg only can live for
24-36 hours after
ovulation
 Sperm can survive up
to 5 days
 Fertilization must take
place in the fallopian
tube
Calendar Based Method
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