Your body: If you are Rh negative, you’ll be getting a RhoGam injection right around now. Remember that your grumpiness is largely due to hormones. You tightening sensations you may be feeling are call Braxton Hicks "practice" contractions.
Baby: Your uterus is now around three inches above your navel. Some babies may like to suck their thumbs, even before they’re born. This week your baby's brain is taking on a wrinkled appearance because of its rapid growth. The wrinkles are called convolutions and are normal in fetal development. The lanugo has mostly disappeared and your baby may have a full head of hair.