week 5 embryo*The fifth week of pregnancy, or the third week after conception, marks the beginning of the embryonic period. This is when the baby’s brain, spinal cord, heart and other organs begin to form.

The embryo is now made of three layers. The top layer — the ectoderm — will give rise to your baby’s outermost layer of skin, central and peripheral nervous systems, eyes, inner ear, and many connective tissues. Your baby’s heart and a primitive circulatory system will form in the middle layer of cells — the mesoderm. This layer of cells will also serve as the foundation for your baby’s bones, muscles, kidneys and much of the reproductive system. The inner layer of cells — the endoderm — will become a simple tube lined with mucous membranes.

Your baby’s lungs, intestines and bladder will develop here. By the end of this week, your baby is likely between 1/16 and 1/8 inch (1.5 to 3 millimeters) long — about the size of the tip of a pen.

I don’t feel much different.  So far, I do not have morning sickness and I haven’t been any more tired than I usually am.  If anything, I’ve been suffering from periods of insomnia around 3am…very annoying!  My boobs are sore, and when I am hungry, I’m REALLY HUNGRY and will start to feel dizzy if I don’t eat right away.  I’m hoping the morning sickness stays away so that I don’t have to worry about puking in front of my patients this semester! 

Friday night (the day I found out) I couldn’t help myself and I just had to buy something!  So I bought a brown sleeper that is DEFINITELY for a baby girl.  On Saturday I bought another one with owls on it that was more gender-neutral (even though Tony says he wouldn’t care if we put a boy in the brown one).  If this baby is a girl, her wardrobe is certainly starting off on the right foot!


And speaking of feet!  My mom gave me these booties that she bought when she found out she was pregnant with me 31 years ago!!  SO CUTE!


I find myself talking to the baby all the time now…telling her (him) to STAY IN THERE!  I hope it’s cozy in there and she (he) snuggles in for a healthy nine months!

*info from mayoclinic.com