24 Weeks

How your baby's growing:Your baby's growing steadily, gaining about a quarter of a pound since last week, when she was just over a pound. Since she's almost a foot long (picture an ear of corn), that makes a pretty lean figure, but her body is filling out proportionally and she'll soon put on more baby fat. Your baby's skin is thin, translucent, and wrinkled, her brain is growing rapidly, and her taste buds are developing. Her lungs are developing "branches" of the respiratory "tree" and cells that produce surfactant, a substance **that helps the air sacs inflate easily.

Bring on the bulk! Baby gains about 6 ounces this week. The weight is in muscle, bone mass and organs.
His body begins to fill out with his appearance increasingly becoming more like a newborn.
Taste buds begin to form. If mom drinks something strange or bitter, baby may be observed showing his distaste.
Little creases have appeared on his palms. The muscular coordination of his hands has improved as he sucks his thumb.
Over the next seven days the sweat glands will be forming in the skin.
His lungs are developing "branches" of the respiratory "tree" and cells that produce surfactant, a substance that helps the air sacs inflate easily.
This week your baby is officially considered viable.
Baby weighs 1.3 pound (600gm) and is 11.8 inches (30cm) long -- almost the length of a ruler!

23 Weeks

How your baby's growing:Your baby is more than 11 inches long and weighs just over a pound. His skin is red and wrinkled. Blood vessels in his lungs are developing to prepare him for breathing. He can swallow, but he normally won't pass his first stool (called meconium) until after birth. Loud noises heard often in utero — such as your dog barking or the roar of a vacuum cleaner — probably won't faze your baby when he hears them outside the womb.

Proportions of the body are now quite similar to a newborn although thinner since he hasn't begun to form body fat.
Bones located in the middle ear harden.
Your baby is able to hear. (Dads, did you know: low-frequency sounds mimicking a male voice penetrate the abdomen and uterine wall better than the higher frequencies of the female voice?)
The eyes are formed, though the iris still lacks pigmentation.
The pancreas, essential in the production of hormones, is developing steadily. She has begun producing insulin, important for the breakdown of sugars.
If born now, your baby has a 15% chance of survival, his odds going up with each passing day. .
The average baby at this stage weighs 1.1 pound (501gm) and is 11.38 inches (28.9cm) long.

22 Weeks

Week 22 according to www.babycenter.com

How your baby's growing:Your baby now looks like a miniature newborn, checking in at 10.9 inches and almost 1 pound. Her skin will continue to appear wrinkled until she gains enough weight to fill it out, and the fine hair (lanugo) that covers her head and body is now visible. Her lips are becoming more distinct, and the first signs of teeth are appearing as buds beneath her gum line. Her eyes are developed, though the iris (the colored part of the eye) still lacks pigment. Eyelids and eyebrows are in place, and her pancreas, essential for hormone production, is developing steadily.

Week Twenty-Two according to http://www.pregnancy.org/pregnancy/fetaldevelopment2.php
Your baby weighs close to a pound at this point!
Your baby can now hear your conversations more clearly than before!. When you talk, read, or sing, expect her to hear you. Studies have found that newborns will suck more vigorously when read to from a book they heard frequently in utero.
Eyelids and eyebrows are fully formed.
Fingernails have grown to the end of the fingers.
Be prepared for all those "Why" questions coming! Your baby's brain has entered a stage of rapid growth, especially in what's called the germinal matrix. This structure deep in the middle of the brain serves as a kind of factory for brain cells and disappears shortly before birth. But the brain's amazing expansion program continues until around the five birthday.
With some help from mom, baby's liver is starting to break down bilirubin, a substance produced by red blood cells.
If your baby is male his testes begin their descent to the scrotum.
Primitive sperm have formed and he is producing testosterone.
Length is 10.94 inches (27.8cm); weight is nearly 1 pound (430gm).

21 Weeks

How your baby's growing:Your baby now weighs about three-quarters of a pound and is approximately 10 1/2 inches long. (HOWEVER ACCORDING TO MY ULTRASOUND ON 10/8/07, MY BABY IS 13 OUNCES) His eyebrows and eyelids are fully developed (THIS WAS APPARENT DURING MY ULTRASOUND AS I HAVE A VIDEO OF THE BABY OPENING AND CLOSING ITS EYELIDS). And you can certainly feel him move. He's oblivious to your schedule, though, so don't be surprised if he starts working out just when you're settling down for the night. If you're having a girl, her vagina is formed now, though it will continue to develop until birth.

Week Twenty-One
White blood cells are under production. Leukocytes (or white blood cells) form our body's defense sytems. They help fight infections and diseases.
Your little one's skin has changed from translucent to become more opaque.
Your infant's tongue is fully formed. If you were able to peek you might catch your son or daughter practicing giving you a raspberry!
If your baby is a girl, her womb and vagina are formed. Unlike males, females have a limited supply of eggs in their lifetime. At this point your daughter will have 6 million eggs. This amount decreases to approximately one million by birth.
Baby swallows more this week. After your baby takes in amniotic fluid, his body absorbs the water in the liquid and moves the rest into the large bowel. This is good practice for his digestive system!
Wake and sleep periods become more consistent. Some research suggests that baby sets her internal clock to match the outside world's even before birth! Your eating and sleeping habits as well levels of light and noise serve as her signals.
Length is now measured crown to heel.
Baby measures about 10.51 inches (26.7cm) and weighs nearly 12.7 ounces (360g).

20 Week Ultrasound

Today I had my first real ultrasound. Since Elijah had off school and I had off work, I was able to take both the kids to get the first glimse of their little brother or sister. We did not find out what the baby is going to be, sorry guys, we like to be suprised. It was amazing as always. The coolest part was getting to see the baby open and closes its eyes, I have video footage of this as well, it was way cool. The baby is long for its gestational age of 20 weeks, they could not get an exact measurement for me due to how the baby was curled up. But the baby is weighing in at 13 ounces, or just over a can of soda. The ultrasound lasted 2 hours and 15 minutes, and we got to see the babys heart, the four chambers to the heart, legs, arms, fingers, feet, ankles, toes, face, spine, and organs. We got to see the kidneys ect. It was cool and everything appears to be normal so far.

I also had my doctors appointment today and my sugar levels have been controlled with diet so all is going well on that front as well. The babys heart rate was 134. Next appointment is Nov 7th.

20 Weeks - Half Way There!

How your baby's growing:Your baby weighs about 10 1/2 ounces now. She's also around 6 1/2 inches long from head to bottom, and about 10 inches from head to heel. (For the first 20 weeks, we use measurements taken from the top of the baby's head to her bottom — known as the "crown to rump" measurement. After that, we use measurements from head to toe. This is because a baby's legs are curled up against her torso during the first half of pregnancy and are very hard to measure.)A greasy white substance called vernix caseosa coats her entire body to protect her skin during its long submersion in amniotic fluid. (This slick coating also eases the journey down the birth canal.)Your baby is swallowing more, which is good practice for her digestive system. She's also producing meconium, a black, sticky substance that's the result of cell loss, digestive secretion, and swallowed amniotic fluid. This meconium will accumulate in her bowels, and you'll see it in her first messy diaper (although a few babies pass it in utero or during delivery).Note: Every baby develops a little differently — even in the womb. Our information is designed to give you a general idea of your baby's development.

You're half way there!
The rapid growth stage is about over. While things have slowed down, this next stage is vital to survival.
The baby's heart grows stronger. Find a quiet place, lay flat on your back. Locate your own heartbeat by finding your pulse. Next lay your hand on your belly. You may be able to distinguish the two heartbeats!
His legs are reaching their relative size. With the increase muscle develop occurring as well, you will start feeling much more than tiny flutter kicks soon!
Immunities are being transferred from you to your baby now. These immune cells will protect her from viruses you've already had for up to six months after birth!
The nerve cells for taste, smell, hearing, seeing, and touch are now developing in specialized areas of the brain. Production slows down as existing nerve cells grow larger and make more complex connections.
Your baby may startle in reaction to loud sounds. Amazingly, she can actually hear noises outside of the womb. Familiar voices, music, and sounds that baby becomes accustomed to during her development stages often are calming after birth.
If your baby is a girl, her uterus is starting to develop. She has approximately six million eggs in her ovaries. About one million will remain at birth.
Baby is about 6.46 inches (16.4cm) and weighs around 10.58 ounces (300g).