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This is important because this marks the beginning of the justational period. Also, the lining in the uterus is done shedding.
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The time span of the pregnancy.
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Within this month, the baby goes from about the size of the tip of a pen to almost 1/4 of an inch, weighing almost Also, if you took a pregnancy test, it would be positive at around week 4.
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In the first trimester, changes in the mother include missing her period, morning sickness, nausea, frequent urination, increase of blood levels of progesterone, cravings, breasts swell, fatigue, and dizziness.
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This is when the rebuilding of the endometrium occurs.
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The egg is released from one of the ovaries.
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The union of a haploid gamete and a diploid zygote (sperm and egg).
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Dividing cells as it goes, the zygote will soon transfrom into a morula.
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Within this two day period, the zygote multiplies cells. When it reaches about 14-16 cells big, that's when it becomes the morula.
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When the cell count in the morula reaches approxomately 64-66, it is now called a blastocyst.
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Once it's implanted, the blastocyst is now an embryo. This is the beginning of the embryonic period as well. Also, the placenta begins to form at this time. The placenta is important because it provides the embryo with nutrients, gets rid of waste, and exchanges respiratory gases.
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Brain, spinal chord, heart, muscles, back bone, ribs, and digestive track start to form at this early stage in the embryonic period.
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The Ectoderm, Mesoderm, and Endoderm are developing. The ectoderm will give rise to the outermost layer of skin, central and peripheral nervous systems, eyes, inner ear, and many connective tissue. The mesoderm is the middle layer that will also serve as the foundation for your baby's bones, muscles, kidneys and much of the reproductive system. The endoderm will become a simple tube lined with mucous membranes. The lungs, intestines and bladder will develop here.
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The baby is 1/2-3/4 of an inch long and weighs almost 2 grams.
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The brain develops further, face, eye lids, and arms start to form at around this time.
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Arms and legs are longer, fingers and ears are taking shape, eyes become visable, the upper lip and nose are done forming, and the body is beginning to straighten out.
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Bones begin to develop, elbows bend, toes take shape, and eyelids and ears keep making progress in development, can usually hear a heartbeat by the end of this week, and the liver is forming.
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The baby now is around 2.13 inches and weighs approximately half an ounce.
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Changes in the mother include oily skin, stretch marks, darkening of skin, mood swings, larger breasts, Braxton Hick contractions, quickening, nasal/gum problems, leg cramps, vaginal discharge, varicose veins, rapid weight gain, heart burn, hemmroids, back aches, frequent urination, and hair growth.
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The baby has started drinking and peeing amniotic fluid. That fluid also can travel through the nose and give off a scent that's fimiliar. After birth, this process is what familiarizes the amniotic fluid and draws the baby to the mother's breasts to feed.
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The baby is now about 4.6 inches long and weighs around 3.5 ounces.
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The gender of the baby with the newer technology can be found around this time (approxomately 12-14 weeks). The sex is usually found with an ultrasound machine. An ultrasound uses different vibrations or sound to capture what the baby looks like.
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By now the lanugo and vernix coat the skin. Lanugo is fine hair covering the body that holds the vernix to the skin. The vernix is a white, pasty like coating that consists of fatty secreations from the sebaceous glands and dead epidermal cells.
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The baby starts accumulating lots of fat and is beginning to grow very quickly. Also, it begins practicing some surviving skills such as swallowing, grasping, and kicking.
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Baby starts sucking its thumb around this time.
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The baby is about 6.5 inches long from head to rump and weighs almost 11 ounces. From head to heel, the baby is about 10 inches.
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The baby can detect a mumbled version of your voice at around this time. It may shift or kick a little in response.
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The sense of touch has been developing, however the baby never really is alert about touching anything until about month five. It will explore the mom's uterus, the umbilical chord, and stroking its face.
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Going from head to heel, the baby is now 11.8 inches long and weighs 1.32 pounds.
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The shape of the abdomen is really round and enlarged, she can feel the baby move every couple of hours, fatigue is common, heartburn, shortness of breath, leg cramps, and ligment pain.
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This is the earliest the baby can be born without dying. Of course medical assistance will be needed, but the baby will survive.
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The baby is now 14.8 inches and weighs 2.22 pounds.
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The baby's eyes have been fused shut until now. The baby can see some light shine through the mother's belly, but it's still very dark and is the most sensitive sense after birth because of lack of practice.
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The baby's lungs have been developing for quite some time now, but are fully ready for when it's finally born!
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The baby is 18.66 inches long and weighs 5.78 pounds.
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The baby is about 20.16 inches and weighs around 8 pounds.
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There are three phases of labor; early, active, and transisitonal. The first phase (early) is preparing the mother's body to give birth. She begins having contractions opening about 0-4 cm for 10-20 minutes lasting 30-60 seconds. The second phase (active) is when the mother actually has the baby. Contractions are about 4-8 cm for 4-5 minutes lasting 60-90 seconds. The last phase (transitional) is when the placenta falls out. Contractions are about 7-10 cm for 1-3 minutes for about 90-120 seconds
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The baby is born on this day if everything runs smoothly! As expected! Everything is fully developed and should be good to go.
