Disclaimer: This calculator uses aggregated statistical data to provide a general reassurance score. It cannot predict the outcome of any individual pregnancy and is not a substitute for professional medical advice. Always consult with your OB-GYN regarding your specific health and pregnancy.
Understanding Miscarriage Statistics
Early pregnancy can be an incredibly anxious time for many expectant parents. Understanding the clinical statistics can often provide reassurance. It's important to know that early miscarriages are very common and are usually the result of random chromosomal abnormalities, not anything the mother did or didn't do.
As your pregnancy progresses week by week, the risk of miscarriage drops exponentially. Once a fetal heartbeat is detected via ultrasound (usually around 6 to 8 weeks), the chance of the pregnancy continuing safely jumps to over 95% for most age groups.
Key Factors That Influence Risk
Clinical studies show two primary factors that influence the statistical risk of miscarriage in the first trimester:
Risk is highest in the first 4 to 6 weeks, often before a person even knows they are pregnant. By week 12 (the end of the first trimester), the risk drops to roughly 1% or less.
Because egg quality decreases as we age, chromosomal abnormalities become more common. The baseline risk for a 25-year-old is statistically lower than the baseline risk for a 40-year-old.