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How Does a Miscarriage Happen?

Updated: Feb 14, 2023

Most miscarriages occur within the first trimester of pregnancy. Many factors can affect pregnancy loss, including an embryo failing to form, abnormal placenta growth, and issues caused by parental genetics.

Read this article to learn more about what can cause a miscarriage and the essential health screening that can confirm a pregnancy’s viability.

What Causes a Miscarriage?

The National Library of Medicine reports, “It is estimated that as many as 26% of all pregnancies end in miscarriage.”

While this may seem like a high percentage, many women may experience a miscarriage before they are even aware they are pregnant.

In many cases, the cause of spontaneous abortion is not an error or harm caused while carrying the pregnancy. It is due to the fetus developing incorrectly on its own. In fact, according to the Mayo Clinic, about 50 percent of miscarriages are associated with extra or missing chromosomes.

A miscarriage is not usually due to genetics from the parent, but some circumstances can induce spontaneous abortion, such as maternal health conditions. According to the Mayo Clinic, these include:

  • Uncontrolled diabetes

  • Infections

  • Hormonal problems

  • Uterus or cervix problems

  • Thyroid disease

What are the Symptoms of a Miscarriage?

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

  • Fluid or tissue passing from your vagina

If you believe you’re experiencing a miscarriage, you should contact your healthcare provider.

Where Can I Get a No-Cost Ultrasound?

According to the National Library of Medicine, an ultrasound is the “gold standard” to determine if a pregnancy is viable or if you have miscarried.

At Positive Options, we offer no-cost pregnancy services, including ultrasounds. This important scan can include verifying the pregnancy's age and confirming its viability.

Contact us today to schedule your appointment.



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