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1.
July 2015

FAQ188, July 2015

How does multiple pregnancy occur? A twin, triplet, or higher-order pregnancy (four or more babies) is called multiple pregnancy. If more than one egg is released during the menstrual cycle and each is fertilized by a sperm, more than one embryo may implant and grow in your uterus. This type of pregnancy results in fraternal twins (or more). When a single fertilized egg splits, it results in multiple identical embryos. This type of pregnancy results in identical twins (or more). Identical twins are less common than fraternal twins.


FAQ056, April 2017

Pregnancy What is a preconception care checkup? Who should have a preconception care checkup? Why is a healthy diet important? How can I make sure my diet is healthy? How can being overweight affect my pregnancy? How can I lose weight if I am overweight? How can being underweight affect my pregnancy? Should I take a vitamin supplement? Why is it important for me to get enough folic acid before I get pregnant? Why is it important for me to get enough iron? Can my lifestyle affect my pregnancy? How can my environment affect my pregnancy? Ca...


FAQ004, May 2011

What happens when labor begins? As labor begins, the cervix opens (dilates). The uterus, which contains muscle, contracts at regular intervals. When it contracts, the abdomen becomes hard. Between the contractions, the uterus relaxes and becomes soft. Up to the start of labor and during early labor, the baby will continue to move.


4.
July 2017

FAQ113, July 2017

What is human immunodeficiency virus (HIV)? Human immunodeficiency virus (HIV) is the virus that causes acquired immunodeficiency syndrome (AIDS).


FAQ164, September 2015

What are prenatal diagnostic tests? Prenatal diagnostic tests are tests that can detect certain disorders before a baby is born.


FAQ006, May 2018

What is cesarean birth? Cesarean birth is the delivery of a baby through incisions made in the mother's abdomen and uterus.


FAQ164, September 2016

What is prenatal genetic testing? Prenatal genetic testing gives parents-to-be information about whether their fetus has certain genetic disorders.


8.
September 2017

FAQ133, September 2017

Why are tests done during pregnancy? A number of lab tests are suggested for all women as part of routine prenatal care. These tests can help find conditions that can increase the risk of complications for you and your fetus.


9.
November 2017

FAQ177, November 2017

What is gestational diabetes (GD)? Diabetes mellitus (also called “diabetes”) is a condition in which too much glucose (sugar) stays in the blood instead of being used for energy. Health problems can occur when blood sugar is too high. Some women develop diabetes for the first time during pregnancy. This condition is called gestational diabetes (GD). Women with GD need special care both during and after pregnancy.


10.
June 2016

FAQ173, June 2016

When is a baby considered “preterm” or “extremely preterm?” A normal pregnancy with one baby lasts about 40 weeks. Babies born before 37 completed weeks of pregnancy are called “preterm” or “premature.” Babies born before 28 completed weeks of pregnancy are considered extremely preterm. The earlier a baby is born, the less likely he or she is to survive. Those who do survive often have serious, sometimes long-term health problems and disabilities.


American College of Obstetricians and Gynecologists
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