This week was pretty uneventful. Which is a good thing. I had a doctor's appointment on Monday. I thought we would get to hear the heartbeat this time, but we did not. Still to early I guess.

The end of the first trimester marks an important step for your baby-to-be. All of her major body systems are in place. In her digestive system, her small intestine is no longer entwined with the umbilical cord, but instead is tucked neatly within the abdomen. Her nervous system continues to develop, and her brain's structure is fully formed. Many of her organs are starting to work on their own, too. For instance, her thyroid begins to secrete hormones. Next week she'll no longer be considered an embryo, but instead graduates into a fetus. She's already looking more and more like the baby you're probably imagining—she even has tiny fingernails. At 12 weeks, your baby weighs in around 1.5 ounces and measures about three inches in length (from crown to rump). Which is about the size of a plum.