First Trimester of Pregnancy First 14 Weeks

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First Trimester of PregnancyFirst 14 Weeks

• Health 7th block

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Week One

• A women starts her period on the first day of
  this week and it will be the last one for
  approximately nine or ten months.
• The egg has not been released yet, since this is
  the start of the womens menstrual cycle.

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Week Two

• The womens period just finished and the uterus
  is now building a new layer of endometrium to
  cushion and nourish the fertilized egg.
• One of the womens ovaries is growing and
  ripening an egg, preparing for ovulation.

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Week Three

• At this stage the egg leaves the ovary and it
  travels through the fallopian tube towards the
  uterus.
• During intercourse anywhere from 140-350 million
  sperm will be ejaculated.
• Finally the egg and the sperm fuse together,
  creating a fertilized egg.
• The fertilized egg, will spend 3-7 days traveling
  down the fallopian tube and will float in the
  uterus for another few days. Then it will implant
  itself to the walls of the uterus.

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The eggs journey through the fallopian tube to
the uterus.
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Week Four

• The blastocyst, or the fertilized egg, is deep
  inside the uterus.
• It keeps dividing to form tissues in the uterus
  both for the mothers and babys use later on in
  the pregnancy.
• The mother may feel fatigue and notice tenderness
  in her breasts at this stage.

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Week Five

• The spinal column, brain and the heart have just
  started to develop at week five.
• The baby is just 1/16 of an inch long.
• The mother might be experiencing nausea that can
  last just in the morning or throughout the day.
• This stage is when most people purchase home
  pregnancy tests and go to the doctor.

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Week Six

• Eyes, ears, and a mouth have started to develop.
  Blood is being pumped by the few cells from the
  heart which now is beating.
• Buds for the arms and legs are also developing.
• Miscarriage is a possibility at this point in the
  pregnancy.

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Six Week Old Baby
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Week Seven

• The baby is now a 1/3 of an inch, which is about
  the size of a grain of rice.
• The arm buds have grown and now hands are
  developing along with the brain, intestines,
  pituitary gland, and pancreas.
• Though the genital tubercle is present, its
  still to early to tell the gender of the baby.
• The mother might experience changes in her
  appetite and unexpected acne because of the
  change in her hormones.

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Week Eight

• During this week, the babys gonads will either
  become testes or ovaries. It is the fathers
  sperm that determines the gender of the baby.
• The limbs are growing longer and the arms are
  bent at the elbow allowing the baby to hug
  itself.
• The mothers uterus has expanded to the size of a
  grapefruit. Before pregnancy its the size of a
  human fist.

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Eight Week Old Baby
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Week Nine

• The baby has started to develop bones and
  cartilage. The hands and webbed feet are now
  formed.
• The baby now responds to movement.
• The mother should be gaining weight regularly.

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Week Ten

• At this stage most of the babys joints are
  formed and all of the organs are present but not
  fully formed or functional.
• The baby is about 1 ¾ of an inch long and ¼ of an
  ounce in weight.
• The mothers veins might become more noticeable
  because of the blood volume increase.

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Week Eleven

• The baby doubles its size during this week in the
  pregnancy.
• Finger nails begin to grow and the irises of the
  babys eyes develop.
• Due to the pregnancy, the mucus membrane in the
  mothers body begins to swell. Swollen feet,
  stuffy nose, and middle ear fluid are examples of
  a couple changes the mother might experience.

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Week Twelve

• The baby now practices breathing movements.
• The mothers uterus shifts upwards a bit so it
  doesnt cause pressure to the bladder which helps
  from going to the bathroom so much.
• Fatigue and nausea slowly decrease during this
  stage.

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Week Thirteen

• All of the babys teeth are formed and are stored
  in the gums. The teeth will start to come in when
  the baby is about four months old.
• Fuzzy hair has started growing on the babys head
  and is white because there isn't any pigment
  there.
• Stretch marks may or may not appear depending on
  the mothers heritage.

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Thirteen Week Old Baby
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Week Fourteen

• The baby is now about three inches in length and
  weighs no more than a slice of cheese.
• Reflexes start to operate and the babys chin,
  nose, and forehead are more define now, he looks
  more like a human.
• While nausea is letting up heart burn could be
  another problem at this stage for the mother.

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Sonogram of a fourteen week old baby in the womb.
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Websites Used

• http//www.childbirthsolutions.com/articles/pregna
  ncy/weeklypregcalendar/index1.php
• http//www.pregnancy-period.com/first_trimester_pr
  egnancy_week_by_week.html