When Can Miscarriages Occur?

Most miscarriages happen in the first trimester before the 12th week of pregnancy. Miscarriage in the second trimester (between 13 and 19 weeks) happens in 1 to 5 in 100 (1 to 5 percent) pregnancies. As many as half of all pregnancies may end in miscarriage.

What week is the highest risk of miscarriage?

March of Dimes reports a miscarriage rate of only 1 to 5 percent in the second trimester.
  • Weeks 0 to 6. These early weeks mark the highest risk of miscarriage. A woman can have a miscarriage in the first week or two without realizing she's pregnant. ...
  • Weeks 6 to 12.
  • Weeks 13 to 20. By week 12, the risk may fall to 5 percent.

How early do most miscarriages occur?

Most miscarriages occur before the 12th week of pregnancy. Signs and symptoms of a miscarriage might include: Vaginal spotting or bleeding. Pain or cramping in your abdomen or lower back.

Sophia Al-Mansoor

Sophia Al-Mansoor

Global Business & E-Commerce Reporter

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.