Saturday, February 28, 2009. One scientific term for the state of pregnancy is gravid, and a pregnant female is sometimes referred to as a gravida. Neither word is used in common. The term embryo is used to describe the developing offspring during the first eight weeks following conception, and the term fetus is used from about two months of development until birth. Tuesday, December 23, 2008. Nutrition and Exercise 3rd Trimester. Nutrition and Exercise 3rd Trimester. Continue to avoid the use of alcohol.

Saturday, February 28, 2009. Months 4 through 6 of the pregnancy are called the second trimester. Most women feel more energized in this period, and begin to put on weight as the symptoms of morning sickness subside and eventually fade away. In the 20th week the uterus, the muscular organ that holds the developing fetus, can expand up to 20 times its normal size during pregnancy. Tuesday, December 23, 2008. Understanding the stages of pregnancy. Sunday, December 21, 2008.