So it sounds like week 28 is pretty standard. According to babycenter.com, " By this week, your baby weighs about 2 1/2 pounds and measures about 14 1/2 inches. At about this time, your baby can open his eyes and turn his head in utero if he notices a continuous, bright light shining from the outside. The fat layers are forming and the fingernails appear." One new thing is that this week officially marks the beginning of the third trimester... the home stretch.