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What week of pregnancy is most common for miscarriage?

Published in Pregnancy & Miscarriage 2 mins read

The weeks between 6 and 8 of pregnancy are the most common time for a miscarriage to occur.

Miscarriages are sadly a relatively common occurrence, affecting a significant portion of early pregnancies. Here's a more detailed breakdown:

  • Early Miscarriage: The vast majority of miscarriages happen in the first trimester, which is before 12 weeks of gestation.
  • Peak Period: The highest risk period is generally considered to be between weeks 6 and 8.
  • Declining Risk: After the first trimester, the risk of miscarriage significantly decreases.

Why are weeks 6-8 higher risk?

This period is crucial for embryonic development. Many miscarriages at this stage are due to chromosomal abnormalities in the developing embryo, which prevent proper growth and development. These abnormalities are often random events and not necessarily indicative of any underlying health issue in the parents.

Frequency of Miscarriage:

  • Estimates vary, but it's generally believed that at least 1 in 5, and possibly as many as 1 in 4, known pregnancies will end in miscarriage.
  • Many miscarriages occur so early that a woman may not even realize she was pregnant.

It's important to remember that experiencing a miscarriage can be emotionally and physically challenging. Support resources are available, and talking to a healthcare provider is essential for both physical and emotional recovery.

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