What is a multiple gestational pregnancy?

Dr. Jeanne Morrison, PhD
Family Practitioner

A multiple gestation pregnancy occurs when more than one fetus is present in a single pregnancy. A multiple gestation pregnancy results from the splitting of a single zygote or the presence of two or more zygotes. When a single zygote splits the offspring have identical genetic make-up, whereas when two or more zygotes are present the offspring each have a unique genetic make-up. The use of new reproductive technologies, especially in the treatment of infertility has increased the incidence of multiple gestation pregnancies.

Years ago, most twins came as a surprise. Now, thanks to advances in prenatal care, most women learn about a multiple pregnancy early. You might suspect you are pregnant with multiples if you have more severe body changes, including:

     • Rapid weight gain in the first trimester
     • Intense nausea and vomiting
     • Extreme breast tenderness

Your doctor can confirm whether you are carrying more than one baby through ultrasound. If you are pregnant with twins or other multiples, you will need to see your doctor more often than women who are carrying only one baby because your risk of complications is greater. Women carrying more than one baby are at higher risk of:

    • Preterm birth
    • Low birth weight
    • Preeclampsia
    • Gestational diabetes
    • Cesarean birth

More frequent prenatal visits help your doctor to monitor your and your babies' health. Your doctor will also tell you how much weight to gain, if you need to take extra vitamins, and how much activity is safe. With close monitoring, your babies will have the best chance of being born near term and at a healthy weight.

After delivery and once your babies come home, you may feel overwhelmed and exhausted. Ask for help from your partner, family, and friends. Volunteer help and support groups for parents of multiples also can ease the transition.

This answer is based on source information from the National Women's Health Information Center.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.