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Week 6
The baby's jaw, cheeks, chin, eyes, ears, and nose are beginning to form what will eventually become one adorable face. In addition, her kidneys, liver, and lungs are developing, and her heart is now beating 80 times a minute (and getting faster every day). All this and she's still no bigger than the length of a nail head (about a quarter of an inch) from top to bottom.http://www.whattoexpect.com/pregnancy/week-by-week/week-6.aspx -
Week 9
Metabolism and hormone levels are surging, which triggers a decrease in blood sugar and blood pressure.Placenta starts developing.http://www.whattoexpect.com/pregnancy/week-by-week/week-9.aspx -
Week 12
The baby weighs a full half-ounce and is about the size of a large plum. Most of the systems are in place, though there's still plenty of maturing to do. For one thing, the fetal digestive system is beginning to practice contraction movements necessary for eating, and their bone marrow is busy making white blood cells. http://www.whattoexpect.com/pregnancy/week-by-week/week-12.aspx -
Week 15
The baby is about the size of an orange this week, its ears have migrated to the sides of their head, and its eyes are moving to the front of their face. Also, the baby can now wiggle their fingers and toes and make breathing movements in preparation for life outside the womb. http://www.whattoexpect.com/pregnancy/week-by-week/week-15.aspx -
Week 18
At five and a half inches long and five ounces in weight, the baby now may be large enough for you to feel it twisting, rolling, kicking, and punching its way around the womb. Plus, the baby's developing yawning and hiccupping skills and its own unique set of toe and fingerprints. http://www.whattoexpect.com/pregnancy/week-by-week/week-18.aspx -
Week 21
This week, the baby swallows a bit of amniotic fluid each day (for nutrition, hydration, and to practice digesting), so it eats whatever's on your menu and gets to put those developing taste buds to good use. http://www.whattoexpect.com/pregnancy/week-by-week/week-21.aspx -
Week 24
About the size of a large banana — and speaking of bananas, if Your baby is about eight and a half inches long and weighs one and a half pounds, gaining steadily at a rate of six ounces per week. Much of that weight comes from accumulating baby fat, as well as from growing organs, bones, and muscle. Those little ears of hers are getting sharper and can hear very loud sounds, from a yapping dog to a jackhammer. http://www.whattoexpect.com/pregnancy/week-by-week/week-24.aspx -
Week 27
For a baby, it's time to trade in the old crown-to-rump measurement for a new head-to-toe standard. So what are your baby’s stats this week (which, coincidentally, is the end of the second trimester)? Fifteen inches — more than a foot long — and triple (or even quadruple) what it was in week 12. His weight is creeping up the charts as well, coming in at just over two pounds. More big news: Your baby may recognize your voice by now. http://www.whattoexpect.com/pregnancy/week-by-week/week-27.aspx -
Week 30
Your belly’s increasing size is a definite clue that your baby is getting bigger every day, weighing in at over three pounds now (he’ll be packing on the weight at a rate of half a pound per week for the next seven weeks). Also growing daily is his brain, which is actually starting to look like the real thing with those characteristic grooves and wrinkles. http://www.whattoexpect.com/pregnancy/week-by-week/week-30.aspx -
Week 33
Your baby is still gaining weight (about half a pound a week), and she could grow up to another full inch this week. With that much baby inside your uterus, your amniotic-fluid level has maxed out, which explains why some of her pokes and kicks feel pretty sharp these days. (There's less fluid to cushion the blows.) http://www.whattoexpect.com/pregnancy/week-by-week/week-33.aspx
