chloasma - tan or brown coloring of the skin, particularly of the forehead, cheeks, and nose. This condition is often linked to pregnancy.

folic acid - a nutrient found in some green leafy vegetables, nuts, beans, citrus fruits, fortified breakfast cereals, and some vitamin supplements. Folic acid can help reduce the risk of birth defects of the brain and spinal cord (also called neural tube defects).

gestational diabetes - a condition in which the glucose level is elevated and other diabetic symptoms appear during pregnancy in a woman who has not previously been diagnosed with diabetes.

heartburn - painful, burning feeling in the chest caused by stomach acid flowing back into the esophagus.

hemorrhoids - swollen blood vessels in and around the anus that cause itching, pain, and sometimes bleeding.

Kegel exercises - pelvic floor exercises that help tone the muscles in the vagina and perineum.

leukorrhea - whitish vaginal discharge during pregnancy.

neural tube defects - defects of the fetal brain or spine.

preterm labor - labor that begins before 37 completed weeks of pregnancy.

rhinitis - an inflammation of the mucous membrane that lines the nose, often due to an allergy to pollen, dust, or other airborne substances, which causes sneezing, itching, runny nose, and nasal congestion.