Reviewed by Dr. Grace Ramosena, MBChB on Jan 25, 2026 Estimate miscarriage risk by week and day. For the most accurate assessment, please include your maternal age, heartbeat status, prior history, and BMI. Maternal Age Week of Pregnancy Day (0-6) Medical History & Ultrasound (Refines Accuracy) Have you had an ultrasound? No / Not yet … Continue reading Miscarriage Risk Calculator | Week and day odds