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Preganacy
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First Trimester
Things that hurt baby(especially during first trimester)
Alcohol, certain prescription and recreational drugs, and other substances that cause birth defects
Infection (such as rubella or cytomegalovirus)
Nutritional deficiencies
X-rays or radiation therapy -
Week 1
One of the first signs that a woman is pregant is missing a period. Blood test can tell if your pregant about 6-8 days after you ovluate. -
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Morning Sickness Occurs
About 30 percent of the women that do experience nausea and headaches, do experience vomiting, according to recent morning sickness statistics.
50 percent more likely to have morning sickness with severe nausea and vomiting if you are pregnant with a girl.
Fortunately experiencing morning sickness is actually a good symptom to have during pregnancy because it means that the hormone levels are increasing appropriately (as this is what causes the nausea) and the placenta is developing well. -
Week 2
If hCG is found in a women's urine on a pregant test (HPT) that means she is pregnant. -
Week 3
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Week 4
Heart begins to pump blood -
Week 5
Essential organs and structures like the brain, heart, and spinal cord start to develop. -
Week 6
Tongue and vocal cords are being to form in the baby’s mouth. -
Week 7
Eyelids are growing and partially cover the baby’s eyes. -
Week 8 (end of embryonic period)
Head nearly as large as body; all major brain regions present
Liver disproptionately large and begins to forms blood cells
Limbs present; though initally webbed, fingers and toes are free by the end of this interval
Bone formation begins. Baby is the size of a raspberry which is about .04 ounces and measures about .63 inches. This week, she's growing about a milimeter each day. -
Week 9
Nipples and hair follicles form. Elbows and toes are recognizable. All essential organs have begun to form. -
Week 10 ( end of the "embryonic period" and the beginning of the "fetal period)
The eyelids are more developed. External features of the ear begin to take their final shape. Facial features continue to develop. The intestines rotate. -
Week 11
Starting to be able to open and close his/her hands. -
Week 12
Baby’s intestines which have grown so much will protrude out into the umbilical cord but will soon move back into the body. Baby is the size of a plum which is about 2.1 inches long and .49 ounces. Now that she's got pretty much all her parts, her main job is to keep on growing. -
Week 13
Its fingers has own set of fingerprints now. -
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Second Trimester
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Week 14
Arms are growing and by the end of this week will be propition to the rest of the body. -
Week 15
Baby’s eyelids are fused shut but it can still sense light and we turn away from it. -
Week 16
The skeleton consists mainly of flexible cartridge. A network of blood vessels is visible through the thin skin. Now, she's about 4.6 inches long and weighs about 3.5 ounces, just as big as an avocado. -
Week 17
Baby can now move all its joints, bones are turning from cartilage to harden bone, baby's sense of hearing is growing. -
Week 18
The baby can now hear sounds from the outside world. -
Week 19
Developing a protective coating over her skin, called vernix caseosa. It's greasy and white and you may see some of it at her birth. Working on her five senses. Nerve cells for her sense of taste, hearing, sight and smell are developing in her brain. -
Week 20
Approximately 20cm. Woolly hair, known as lanugo, covers the entire head. She's got working taste buds. Now, she's gulping down several ounces of amniotic fluid each day -- that's significantly more than before. Baby weighs about 10.2 ounces and measures about 6.5 inches, the size of a banana. -
Week 21
As her digestive system preps for the outside world, she's manufacturing meconium -- the tarry black substance you'll find in her first dirty diaper (ew)! If it's a girl, she's already got a lifetime's supply of eggs in her womb -- about six million of them! At 10.5 inches and about 12.7 ounces, she's big enough now that you've probably been feeling her movements. -
Week 22
Lanugo hair covers entire body. Eyebrows and lashes appear. Nails appear on the fingers and toes. The baby is more active with increased muscle development. The mother can feel the baby moving. The fetal heartbeat can be heard with a stethoscope. Tooth buds are developing under gum line. -
Week 23
She's forming little nipples (yeah, really!) Her face is fully formed now -- she just needs a little extra fat to fill it out. She's listening to your voice and your heartbeat -- and even to loud sounds like cars honking and dogs barking. At about 10.5 to 11.8 inches and about 12.7 to 20.8 ounces. -
Week 24
The start of developing taste buds and also lungs are developing branches of the respiratory tree as well as cells that produce surfactant that helps the air sacs inflate easier. Your 10.5-to-11.8-inch fetus weighs about 12.7 to 20.8 ounces. -
Week 25
She's enjoying her new sense of equilibrium -- she now knows which way is up and which is down. She's growing more fat and more hair too! During month six, the average fetus measures about 13.6 inches to 14.8 inches and weighs about 1.5 to 2.5 pounds. -
Week 26
More nerve endings are developing in the ar so baby will become more responsive to sounds. -
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Third Trimester
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Week 27
She's practicing inhaling and exhaling with her rapidly developing lungs. It's official: Baby's showing brain activity! And her brain will keep on getting more complex. At 13.6 to 14.8 inches and 1.5 to 2.5 pounds, she's not just getting bigger, she's getting smarter. -
Week 28
Baby has eyelashes now and will turn its head to a continuous bright light from the outside. Putting on layers of fat, your baby now weighs in around 1.5 to 2.5 pounds and measures about 13.6 to 14.8 inches, the size of an eggplant. -
Week 29
Head is growing to make room for brain which is developing billions of neurons. -
Week 30
As baby’s eyelids open and close it can distinguish between light and dark. -
Week 31
He's going through major brain and nerve development. Eye development, too. His irises now react to light! All five of his senses are in working order. -
Week 32
Toenails and fingernails start to grow in. Still growing, your baby is about the size of a squash which weighs in at about 2.5 to 3.8 pounds and measures about 15.2 to 16.7 inches. -
Week 33
Baby keeps its eyes open while awake. Also starting to coordinate breathing with sucking and swallowing. baby’s bones are hardening and he going through (more) major brain development. -
Week 34
Baby’s lungs are fully developed now and 99% of babies born at this stage can survive and have no long term health problems. -
Week 35
Now, his hearing is fully developed, and he responds best to high-pitched noises. If it's a boy, his testes have probably fully descended. -
Week 36
She's getting closer and closer to being able to breathe on her own. Her skin is getting smooth and soft and her gums are rigid. Her liver and kidneys are in working order. Circulation and immune systems are basically good to go, too. By this time the average baby is 7.2- to 18.7-inch and 4.2- to 5.8-pound range. -
Week 37
Baby will have a full head of hair that is about 1 and a half inch, somer babies though just have some peach fuzz at birth. -
Week 38
Your baby hands are fully developed and the baby has enough grip to hold itself up. -
Week 39
Baby is producing more skin as the outer layer is sloughing off. -
Week 40
Baby’s skull isn't one bone yet to help with giving birth so that the head can compress, this will cause the baby to have soft spots on the head for about a year until the bones in the head start to fuse together. The average fetus is about 6.2 to 9.2 pounds and measures about 18.9 to 20.19 inches about the the size of a jackfruit.
