15 weeks - Stick of Butter!!!

Still 2 pounds down, still feeling exhausted sometimes, and still puking sometimes. I also had my first big headache since getting pregnant. I think the headache is what is making me extra tired this week. I have been mostly feeling better.

One of my books highlighted week 15 as the week the baby would start to look "less fish-like" as the eyes move around to the front of the head. The baby is now somewhere around 4 to 4.5 inches long. A stick of butter is just a little longer than 4 inches....

Here's some other scoop on what is happening at 15 weeks...

http://www.babycenter.com/6_your-pregnancy-15-weeks_1104.bc
How your baby's growing:At around 4 inches long, crown to rump, your baby now weighs about 2 1/2 ounces. He's busy inhaling and exhaling amniotic fluid, which will help develop the air sacs in his lungs. His legs are growing longer than his arms now, and he can move all his joints and limbs. That means his hands are more functional, too. Sweat glands are appearing, and although his eyelids are fused shut, he can sense light. If you shine a flashlight at your tummy, he's likely to move away from the beam. There's not much for your baby to taste at this point, but his taste buds are beginning to form. And if you have an ultrasound, you may be able to find out whether your baby's a boy or girl! (Don't be disappointed if it remains a mystery, though. Nailing down the sex depends somewhat on how clear the picture is and the position of your baby during the ultrasound; he may be curled or turned in such a way as to keep you in suspense.)

http://pregnancy.baby-gaga.com/calendar/week15
Your nearly four-inch long gymnast is happily mobile inside your womb and if you're really lucky, you’ll notice a point when your sneezing, coughing or laughing results in a little kick here or a poke there. Still, many women don't feel anything until the 17th week or later. Although the poking and kicking isn't very charming during sleeping hours, it’s a good sign as it means your baby is actually reacting to outside events. Yay! You’ve got yourself one active healthy baby! Their little elbows and knees are bending more freely this week and their little legs are finally growing longer than their arms and getting pumped up for prenatal Richard Simmons. Many of their major organ systems are increasing in capacity—particularly that amazing tiny heart and complex circulation system, which is now pumping about 25 quarts of blood per day, and will increase to a very impressive 200 quarts per day by the end of the pregnancy. As far as hair goes, we’ve got some new scalp patterns beginning to develop on the head, although actual head hair is not yet present.

http://www.maternityandbabyshoppingmart.com/pregnancy_week_15.html
Congratulations! During pregnancy week 15 your baby is a whopping 4.5 inches long (roughly) and may weigh as much as 1 ½ ounces. While this doesn't sound like much it is a significant change from the tiny being your baby was just a few short weeks ago. Remember each week of your pregnancy from here on out your baby continues to grow at an amazing pace.
During pregnancy week 15 specifically your baby is working hard to grow blood vessels. During pregnancy week 15 and beyond a fine substance called lanugo begins to cover your baby's body, except for her palms, soles of her feet, lips, genitals and nails. Most babies will have lanugo until roughly the eighth month of pregnancy when this fine substance starts to shed. Some babies however will have a little lanugo even at birth.
This fine hair helps protect your baby's body. Did you know some baby's start sucking their thumb as early as pregnancy week 15? It's true! Your baby's bones are also becoming harder during pregnancy week 15. By this time your baby is filling his days practicing inhaling and exhaling. While your baby's lungs are far from developed, this practice is very important for their birth day!