Which sign requires immediate attention in the second trimester of pregnancy?

• A. Lower abdominal and shoulder pain.
• B. Headache.
• C. Vaginal bleeding.
• D. Nausea

Answer: (C)

Vaginal bleeding. Any bleeding during the second trimester is a red-flag and needs immediate evaluation because it can signal serious issues such as placenta previa, placental abruption, or other complications that can affect both mother and baby. Prompt assessment helps determine fetal well-being (fetal heart rate, ultrasound to locate the placenta) and maternal stability, guiding urgent management if needed. Headache and nausea can occur in pregnancy but are not as time-sensitive in the second trimester, and pain alone without bleeding, while concerning, does not carry the same immediate risk signaling as active vaginal bleeding.