In week 18 the baby is starting to look more human. Its exciting to know that the fingertips and toes are developing pads, and the eyes are looking forward rather than out the sides of the head. Meconium, the baby's first bowel movement, is accumulating within the bowel. And if your baby is a boy, his prostate gland is beginning to develop.
If you notice your belly making jerky movements in sync, don't panic; your baby may have the hiccups.
Maternal Changes: Feeling dizzy, lightheaded or faint are normal during pregnancy. These symptoms aren't harmful unless they occur frequently or severely. "Postural hypotension" is low blood pressure due to a change in position and happens frequently in pregnancy because your cardiovascular system doesn't react as fast.
Your uterus is just below your belly button now.
If you're having an ultrasound to verify fetal age or for other reasons, your careprovider will probably schedule it between now and 20 weeks. It's often possible to determine your baby's sex at this stage, and you'll be able to tell arms from legs and all sorts of delightful details!