A threatened miscarriage is a condition that suggests a miscarriage might take place before the 20th week of pregnancy. Symptoms include vaginal bleeding and abdominal cramps.
Update Date 11/14/2014
Updated by: Cynthia D. White, MD, Fellow American College of Obstetricians and Gynecologists, Group Health Cooperative, Bellevue, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.