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weeks 1-2
The mother is not pregnant during these "first weeks". The Ob-gyn counts pregnancy as 40 weeks from the start of the last menstral cyle. during these weeks thre are no changes to the baby. -
weeks 3-4
some things that the mother can experience in these weeks of pregnancy are a missed period, and cramping, she may find out she's pregnant by the end of the 4th week or later. Pregnancy test measure HCG hormone levels. During this week conception occurs. The zygote turns into a blastocyst and travels down the fallopian tubes. Rapid cell division begins -
weeks 5-6
In these weeks the mother may experience a missed period, tender breasts frequent urination, mood swings, morning sickness, constipation, heartburn, gas may occur, and increased heart rate due to increased cardiac volume, and bloating. -
weeks 7-8
The brain is growing rapidly
the eyes and ears continue to develop.
The inner ears start to develop, but the outer ears on the sides of the head will not appear for a couple more weeks. the mother is probably feeling tired. Your breasts might feel sore and enlarged, and you may need to pee more often than usual. -
10
the baby is growing all body parts are present. baby is 1/1/4 inches long. baby's skeleton is forming, and Arms and legs are longer. Fingers and toes become distinct. the mother may experience heartburn. -
week 11
genitals develop head is about half the length of the baby. teeth buds form. baby is 2 inches in length. changes in mom are same as week 10 -
week 12
Fingernails grow
Face has more defined profile
Intestines are in the abdomen About 2 ½ inches in length and weighs about ½ ounce
the changes in the mother are the same as weeks 10-11 -
week14
Baby’s sex will become apparent
Baby can swallow and make urine
Baby is about 3 ½ inches in length and weighs about 1 ½ ounces
changes in the mother are Morning sickness should start to disappear Appetite increases Abdomen grows slowly Reducefatigue Dark spots on skin may form Sensitive gums Loose ligaments Clumsiness Stuffy nose Leg cramps -
week 16
Baby is moving but mom cannot feel it Baby is about 4 ½ inches in length and weighs about 4 ounces changes in mother are the same as week . -
weeks 18-19
Baby begins to hear
Digestive system worksVernix caseosa covers the baby, Changes in the Mother are, Enlarged abdomen may become apparent, Backaches, Stretch marks may appear Heartburn,Swelling in hands and feet,Trouble sleeping -
weeks 20-21
Regular sleep and wake patterns, All organs and structures formed,Breathing movements occur but are underdeveloped,Covered in Lanugo,May begin to suck thumb Baby is about 6 1/3 inches in length and weighs about 11 ounces changes in the mother are the same as 18-19 -
week 22
Has nails, fingerprints, eyebrows, lashes, and possibly some hair,Heartbeat heard with a stethoscope. Lowest limit of viability (survival outside the mother)Baby is about 7 ½ inches in length
and weighs about 1 pound changes in mother Hip, groin, and abdomen pain Shortness of breath Fast-growing hair and nails
Belly button may poke out -
week 24
Wrinkly skin, translucent and pinkish red, Lung development, Regular sleep and wake patterns, Baby is about 8 inches in length and weights about 1 1/3 pounds changes in mother areWrinkly skin, translucent and pinkish
red Lung development, Regular sleep and wake patterns, Baby is about 8 inches in length and weights about 1 1/3 pounds -
weeks 31-32
the baby Finished most major development Rapid weight gain begins Lanugo starts to fall off Baby is about 11 inches in length and weighs about 3 ¾ pounds the mother may expBackaches and fatigue Leg cramps,Shortness of breath, Fetal kicks interrupt rest, Braxton-Hicks contractions, Pelvic Pain, At the end of week 31 weight gain is about 18-20 poundseience -
weeks 28-29
Eyes begin to partially open and
close Central nervous system directs
breathing and body temperature
control Lungs are capable of breathing air Baby begins to kick and stretch Baby is about 10 inches in length and weighs about 2 ¼ pounds -
week 34
the baby Continues to grow fingernails and
toenails,Develop breathing motion,Responds to light,Skin is pink and smooth, Baby is about 12 inches in length
and weighs about 4 ½ pounds the changes in the mother are the same as week 31-32 -
weeks 36-37
the baby Takes up most of the amniotic sacStarts to turn head down to prepare for labor, Baby is about 13 ½ inches in length and weighs about 6 pounds, Will continue to gain about ½ pound
a week until delivery the mother Still feels stretches and movement
of baby, Lightening felt – Decreased pressure on lungs and organs, Insomnia, Braxton-Hicks contractions,Total weight gain of 25-35 Pounds -
week 38-40
the baby's Brain, lungs, and liver still developing,Brain will double in size between week 35 & 39, Lung development during last few weeks helps with fewer complications after birth, At week 39, baby is considered full term,Weight gain helps with temperature control once born changes in the mother are the same as week 36-37