Full term pregnancy is considered 40 weeks counted from the first day of the development of the baby in 7 8 months your last period. This is broken down into weeks, and divided into three equal parts called trimesters. The seventh, eighth, and ninth months are the third and final trimester of pregnancy. For more information on development, use the drop down menus above or the weeks links below.
27 weeks – The fetus weighs now just over 2 pounds and is about 14 inches long. The baby’s eyes begin to open around this time. 28 weeks – The fetus has his own regular intervals for sleeping and being awake. It also opens and closes its eyes and may suck a thumb.
2 pounds and is about 15 inches long from head to heel. His muscles and lungs are continuing to mature, and his head is growing bigger to accommodate his brain, which is busy developing billions of neurons. Baby hears things better from the vibrations all around, and can now distinguish real sounds and voices. 30 weeks – For several months, the umbilical cord has been the baby’s lifeline to the mother. Nourishment is transferred from the mom’s blood, through the placenta, and into the umbilical cord to the fetus. The fetus now weighs about 3 pounds. 31 weeks – Now it is time for the baby’s lungs and digestive tract to be very near of being mature.
Baby’s weight gain will exceed its growth in length from now on. Baby may move to the rhythm of music. Studies with heart rates show that they may also prefers some types of music to others — already! 32 weeks – During this time the baby sleeps most of the day. The baby will now weigh about 4 pounds. The uterus getting to be too small for the baby to move so you may have notice a decrease in your baby’s movements.