During the last three months, your baby grows very fast. It is important that you eat enough food so you will gain weight. Much of the weight you gain goes to the baby. Alcohol, drugs and tobacco can cause your baby to come too early and be too small. Sexually transmitted diseases can also hurt your baby.
"SP441-C-Smart Choices...How Your Baby Grows - The Last Trimester," The University of Tennessee Agricultural Extension Service, , http://trace.tennessee.edu/utk_agexheal/65