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.
Review Date 11/10/2022
Updated by: John D. Jacobson, MD, Department of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.