When is a spontaneous abortion most likely to occur?

Question

Quizplus · Accepted Answer

Spontaneous abortion, also known as miscarriage, most commonly occurs in the first trimester of pregnancy (up to 12 weeks gestation) and the risk significantly decreases after the first trimester. Less commonly, spontaneous abortion can occur in the second trimester (between 13-27 weeks) or third trimester (between 28-40 weeks); however, these are typically due to other factors such as preterm labor or fetal abnormalities.

When Is a Spontaneous Abortion Most Likely to Occur