Week 12
Your Baby's Development
Your baby's intestines can now fit into his or her abdomen. In addition, because of increased maternal blood volume, the fetus' heart rate may increase by a few beats a minute.

Your Body
Has anyone told you that you have that "pregnant glow"? It's not just
the joy you may feel because you're having a baby - there's a physiological
reason for smoother, more radiant skin during pregnancy. The increased blood
volume and pregnancy hormone, hCG, work together to give you that glow. The
greater blood volume brings more blood to the blood vessels and hCG increases
oil gland secretion, resulting in a flushed, plumper, smoother skin appearance.
Sometimes, though, the increased oil gland secretion can cause temporary acne.