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The first day of menstruation is considered the first day of pregnancy. From this date on starts the 40 weeks time span o pregnancy.
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The sperm and egg make contact. Only one sperm breaks through because only one sperm is needed.
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Soon after fertilization, the cells start rapidly multiplying.
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After cell division, the zygote floats in the uterus for a few days before burrowing into the thickening endometrium.
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Near the end of week 5, the nerves forming the spinal cord have started to form.
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At week 6 a pipe shaped heart has formed and begins to beat.
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At Thhis point arms and legs have begun to form. The heart is beating with one chamber.
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At this point the face is beginning to develop and the embryo is about 18 mm long.
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Along with fingers and toes, the upper lip and nose have begun to form. Embryo measures 30 mm and the main structure of the heart is complete.
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Ears and nose can are developed and fingerprint formation is evident.
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The fetus much resembles a newborn already. The brain is multiplying at a rapid rate of 250,000 cells per minute.
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Along with fingernails and toenails, the fetus now has a facial profile. fetus is around 2.5 inches long now.
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Bones begin to replace cartilage and ribs begin to appear.
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By now the fetus begins to develop the prostate if it is a male, and ovaries begin to set in place in the females.
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Bone and marrow continue to develop while the fetus has just aquired an adult's set of taste buds.
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The facial muscles have developed allowing for facial expressions tp occur. Baby is now nearly 5 inches.
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They fetus is recycling amniotic fluid now, and fat begins to be stored under the skin.
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The fetus can now hear, and may be startled by loud noises. At this point aveoli have begun to form.
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You can now identify the gender of your baby! baby is around 6.5 inches now.
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Your baby is halfway to being evicted from the womb! It can now recognize the mothers voice and the mother can now feel fetal movements.
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Now the small intestine is beginning to absorb sugars and bone marrow is producing blood cells.
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The taste buds begin to develop on the babys tongue. At this point, the mother's movements can wake the baby.
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Equilibrium has begun to develop in the baby. By now your friends and relatives will notice youre pregnant.
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The lungs have begun to develop branches and the eyelids can be clearly seen now.
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Baby beguns more exstensive movements in the womb. Baby's hamds are now fully developed.
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Baby can respond to touch and is very active in the womb at this point. Can move thumb into mouth.
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Baby can now open its eyes! Baby now looks a lot like it will at birth.
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REM sleep can be detected at this point meaning the baby may be dreaming.
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As baby explores more, the forceful movements are more promminents.
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As baby continues to absorb nutrients from the mothers diet, the baby gains weight starting at this week, making its way towards the final borth weight.
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Baby's lungs and digestive tract are very near to being mature. Weight gain exceeds length growth for the rest of the pregnancy.
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Sex organs now begin to drop into place (testis/clitoris).
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Baby begins to shed the fine layer of hairs in preperation for birth.
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Weight gain continues at a rapid rate as baby nears birth.
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Baby gains half a pound per week in the last month.
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You may feel contractions as the baby drops into the birth canal.
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It is now possible to gve birth without the baby being determined premature, baby is fully developed.
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