The baby now weighs three pounds and is about 17 inches long from head to toe.

It's head is getting bigger, and brain growth is very rapid at this time. Nearly all babies react to sound by 30 weeks.  The baby's nutritional needs reach their peak during the third trimester. I'll need plenty of protein, vitamin C, folic acid, iron, and calcium (about 200 milligrams is deposited in the baby's skeleton every day). The skeleton hardens even more, and the brain, muscles, and lungs continue to mature.  At this point, the baby is capable of living outside the womb but would be considered premature at birth.

They say I may experience cramps in my feet or legs due to a lack of calcium. I will notice swelling in my hands and feet during this month of pregnancy. Braxton Hicks contractions are also common this month.