Update on 5 Weeks

Babycenter.com: "How your baby's growing:
Deep in your uterus your embryo is growing at a furious pace. At this point, he's about the size of a sesame seed, and he looks more like a tiny tadpole than a human. He's now made up of three layers — the ectoderm, the mesoderm, and the endoderm — which will later form all of his organs and tissues.

The neural tube — from which your baby's brain, spinal cord, nerves, and backbone will sprout — is starting to develop in the top layer, called the ectoderm. This layer will also give rise to his skin, hair, nails, mammary and sweat glands, and tooth enamel.

His heart and circulatory system begin to form in the middle layer, or mesoderm. (This week, in fact, his tiny heart begins to divide into chambers and beat and pump blood.) The mesoderm will also form your baby's muscles, cartilage, bone, and subcutaneous (under skin) tissue.

The third layer, or endoderm, will house his lungs, intestines, and rudimentary urinary system, as well as his thyroid, liver, and pancreas. In the meantime, the primitive placenta and umbilical cord, which deliver nourishment and oxygen to your baby, are already on the job."

I'm still nervous and excited. Hopefully I'll actually get to see my baby next Monday. Dr.S couldn't find actual baby last time, because I was too early, but was surprised to see anything at all. I can't wait to see if Dr.S finds baby this time and tosb's heartbeat. I'm also still apprehensive, because of the miscarriage rate, and 1 in 4 is a little higher than I like to think about...It makes me worry when I do, so I try not to, but then something horrible happened that made me very sad, and made it hit home for me as to how fragile this whole process can really be. My heart is broken right now, and I hope everything goes okay.