How your baby's growing: Your baby's waiting to greet the world! He continues to build a layer of fat to help control his body temperature after birth, but it's likely he already measures about 20 inches and weighs a bit over 7 pounds, a mini watermelon. (Boys tend to be slightly heavier than girls.) The outer layers of his skin are sloughing off as new skin forms underneath.

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How your baby's growing: Your baby has really plumped up. He weighs about 6.8 pounds and he's over 19 1/2 inches long (like a leek). He has a firm grasp, which you'll soon be able to test when you hold his hand for the first time! His organs have matured and are ready for life outside the womb.

Wondering what color your baby's eyes will be? You may not be able to tell right away. If he's born with brown eyes, they'll likely stay brown. If he's born with steel gray or dark blue eyes, they may stay gray or blue or turn green, hazel, or brown by the time he's 9 months old. That's because a child's irises (the colored part of the eye) may gain more pigment in the months after he's born, but they usually won't get "lighter" or more blue. (Green, hazel, and brown eyes have more pigment than gray or blue eyes.)

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How your baby's growing: Congratulations — your baby is full term! This means that if your baby arrives now, his lungs should be fully mature and ready to adjust to life outside the womb, even though your due date is still three weeks away.

Your baby weighs 6 1/3 pounds and measures a bit over 19 inches, head to heel (like a stalk of Swiss chard). Many babies have a full head of hair at birth, with locks from 1/2 inch to 1 1/2 inches long. But don't be surprised if your baby's hair isn't the same color as yours. Dark-haired couples are sometimes thrown for a loop when their children come out as blonds or redheads, and fair-haired couples have been surprised by Elvis look-alikes. And then, of course, some babies sport only peach fuzz.

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How your baby's growing: Your baby is still packing on the pounds — at the rate of about an ounce a day. He now weighs almost 6 pounds (like a crenshaw melon) and is more than 18 1/2 inches long. He's shedding most of the downy covering of hair that covered his body as well as the vernix caseosa, the waxy substance that covered and protected his skin during his nine-month amniotic bath. Your baby swallows both of these substances, along with other secretions, resulting in a blackish mixture, called meconium, will form the contents of his first bowel movement.

At the end of this week, your baby will be considered full-term. (Full-term is 37 to 42 weeks; babies born before 37 weeks are pre-term and those born after 42 are post-term.) Most likely he's in a head-down position. But if he isn't, your practitioner may suggest scheduling an "external cephalic version," which is a fancy way of saying he'll try to coax your baby into a head-down position by manipulating him from the outside of your belly.

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How your baby's growing: Your baby doesn't have much room to maneuver now that he's over 18 inches long and tips the scales at 5 1/4 pounds (pick up a honeydew melon). Because it's so snug in your womb, he isn't likely to be doing somersaults anymore, but the number of times he kicks should remain about the same. His kidneys are fully developed now, and his liver can process some waste products. Most of his basic physical development is now complete — he'll spend the next few weeks putting on weight.

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How your baby's growing: Your baby now weighs about 4 3/4 pounds (like your average cantaloupe) and is almost 18 inches long. His fat layers — which will help regulate his body temperature once he's born — are filling her out, making him rounder. His skin is also smoother than ever. His central nervous system is maturing and his lungs are continuing to mature as well. If you've been nervous about preterm labor, you'll be happy to know that babies born between 34 and 37 weeks who have no other health problems generally do fine. They may need a short stay in the neonatal nursery and may have a few short-term health issues, but in the long run, they usually do as well as full-term babies.

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How your baby's growing: This week your baby weighs a little over 4 pounds (heft a pineapple) and has passed the 17-inch mark. He's rapidly losing that wrinkled, alien look and his skeleton is hardening. The bones in his skull aren't fused together, which allows them to move and slightly overlap, thus making it easier for him to fit through the birth canal. (The pressure on the head during birth is so intense that many babies are born with a conehead-like appearance.) These bones don't entirely fuse until early adulthood, so they can grow as his brain and other tissue expands during infancy and childhood.

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How your baby's growing: By now, your baby weighs 3.75 pounds (pick up a large jicama) and is about 16.7 inches long, taking up a lot of space in your uterus. You're gaining about a pound a week and roughly half of that goes right to your baby. In fact, he'll gain a third to half of his birth weight during the next 7 weeks as he fattens up for survival outside the womb. He now has toenails, fingernails, and real hair (or at least respectable peach fuzz). His skin is becoming soft and smooth as he plumps up in preparation for birth.

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How your baby's growing: This week, your baby measures over 16 inches long. He weighs about 3.3 pounds (try carrying four navel oranges) and is heading into a growth spurt. He can turn his head from side to side, and his arms, legs, and body are beginning to plump out as needed fat accumulates underneath his skin. He's probably moving a lot, too, so you may have trouble sleeping because your baby's kicks and somersaults keep you up. Take comfort: All this moving is a sign that your baby is active and healthy.

How your baby's growing: Your baby's about 15.7 inches long now, and he weighs almost 3 pounds (like a head of cabbage). A pint and a half of amniotic fluid surrounds him, but that volume will decrease as he gets bigger and takes up more room in your uterus. His eyesight continues to develop, though it's not very keen; even after he's born, he'll keep his eyes closed for a good part of the day. When he does open them, he'll respond to changes in light but will have 20/400 vision — which means he can only make out objects a few inches from his face. (Normal adult vision is 20/20.)

See what your baby looks like this week.