During flights, the risk of deep vein thrombosis is decreased by getting up and strolling often, in addition to by avoiding dehydration. Prenatal care may embrace taking additional folic acid, avoiding medicine, tobacco smoking, and alcohol, taking regular exercise, having blood tests, and regular physical examinations. Complications of being pregnant might embrace problems of high blood pressure, gestational diabetes, iron-deficiency anemia, and severe nausea and vomiting.