This section is an outline of the possible risk factors that may be discovered as your pregnancy progresses.

• Your screening test for chromosomal anomalies such as Down syndrome comes back "screen positive."

• Your ultrasound scan at 18-20 weeks shows minor "abnormal" findings.

• Your routine glucose challenge test taken at 24-28 weeks is elevated.

• Repeat ultrasound to check the baby's growth shows less than expected growth.

• You have uterine contractions and suspected premature labor.

• You have some leakage of fluid from the vagina.

• You have vaginal spotting or bleeding.

• Your blood pressure is higher than expected.

• The baby shows a "less than reassuring" heart rate tracing on a nonstress test.

• Ultrasound shows increased or decreased amniotic fluid.