Baby Klein at 13 Weeks

Fingerprints have formed on our baby's tiny fingertips, her veins and organs are clearly visible through her still-thin skin, and her body is starting to catch up with her head — which makes up just a third of her body size now. If we're having a girl, she now has more than 2 million eggs in her ovaries. Our baby is almost 3 inches long (the size of a medium shrimp) and weighs nearly an ounce.

Third Look at Baby Klein- Nuchal Fold Scan

Today, Sam and I went to have Baby Klein's nuchal fold prenatal scan. This scan helps Dr. Bochner to assess the risk of having Down syndrome, some other chromosomal abnormalities as well as major congenital heart problems. The test uses an ultrasound to measure the clear (translucent) space in the tissue at the back of our baby's neck. Babies with abnormalities tend to accumulate more fluid at the back of their neck during the first trimester, causing this clear space to be larger than average.

Dr. Bochner was very happy with Baby Klein's scan result, although we are waiting for confirmation in 10 days. He said that Baby Klein looks like a "big, perfect & healthy boy(!)", but again, we still have to wait for a final gender confirmation, around weeks 17-20. Needless to say, Sam was extremely happy to hear Dr. Bochner's suspicions about Baby Klein's gender.

Baby Klein at 12 Weeks

The most dramatic development this week: reflexes. Your baby's fingers will soon begin to open and close, his toes will curl, his eye muscles will clench, and his mouth will make sucking movements. In fact, if you prod your abdomen, your baby will squirm in response, although you won't be able to feel it. His intestines, which have grown so fast that they protrude into the umbilical cord, will start to move into his abdominal cavity about now, and his kidneys will begin excreting urine into his bladder. Meanwhile, nerve cells are multiplying rapidly, and in your baby's brain, synapses are forming furiously. His face looks unquestionably human: His eyes have moved from the sides to the front of his head, and his ears are right where they should be. From crown to rump, your baby-to-be is just over 2 inches long (about the size of a lime) and weighs half an ounce.

Baby Klein at 11 Weeks

Your baby, just over 1 1/2 inches long and about the size of a fig, is now almost fully formed. Her hands will soon open and close into fists, tiny tooth buds are beginning to appear under her gums, and some of her bones are beginning to harden. She's already busy kicking and stretching, and her tiny movements are so effortless they look like water ballet. These movements will become more frequent as her body grows and becomes more developed and functional. You won't feel your baby's acrobatics for another month or two — nor will you notice the hiccupping that may be happening now that her diaphragm is forming.

"Surprise!!! We're Pregnant!"

Today, Sam and I told our parents that we are pregnant. We waited for Sam's parents to come back from Israel and we had our little message written on a cake! Sam's parents loved it! As they were opening the cake, and digesting the message, I called my parents with the great news. What an awesome night!

Second Look at Baby Klein

Mom and Dad are extremely excited! Baby Klein is doing very well! During our second ultrasound, Baby Klein was happily dancing around. S/he later took a little break and put his/her hands right by his/her mouth! We were even able to hear Baby Klein's heartbeat using a stethoscope. Cutest. Baby. Ever.

The first two pictures show how Baby Klein has grown in just two weeks. The third picture is a view from the top- you can see his/her head and hands.

Baby Klein at 10 Weeks

Though he's barely the size of a kumquat — a little over an inch or so long, crown to bottom — and weighs less than a quarter of an ounce, your baby has now completed the most critical portion of his development. This is the beginning of the so-called fetal period, a time when the tissues and organs in his body rapidly grow and mature.

He's swallowing fluid and kicking up a storm. Vital organs — including his kidneys, intestines, brain, and liver (now making red blood cells in place of the disappearing yolk sac) — are in place and starting to function, though they'll continue to develop throughout your pregnancy.

If you could take a peek inside your womb, you'd spot minute details, like tiny nails forming on fingers and toes (no more webbing) and peach-fuzz hair beginning to grow on tender skin. In other developments: Your baby's limbs can bend now. His hands are flexed at the wrist and meet over his heart, and his feet may be long enough to meet in front of his body. The outline of his spine is clearly visible through translucent skin, and spinal nerves are beginning to stretch out from his spinal cord. Your baby's forehead temporarily bulges with his developing brain and sits very high on his head, which measures half the length of his body. From crown to rump, he's about 1 1/4 inches long. In the coming weeks, your baby will again double in size — to nearly 3 inches.