More Information Blighted ovum: What causes it? Share on: Facebook Twitter. Show references Tulandi T, et al. Spontaneous abortion: Risk factors, etiology, clinical manifestations, and diagnostic evaluation. Accessed May 15, Strand EA.
Increasing the management options for early pregnancy loss: The economics of miscarriage. American Journal of Obstetrics and Gynecology. Robinson GA. Pregnancy loss. Ferri FF. Spontaneous miscarriage. In: Ferri's Clinical Advisor Philadelphia, Pa.
Rink BD, et al. Recurrent pregnancy loss. Ectopic pregnancy and miscarriage. Marx JA, et al. Acute complications of pregnancy. Tulandi T, et al. Read on to learn about what causes miscarriages and the risk for miscarriage during pregnancy. Kaylen Silverberg, a Texas-based fertility specialist, says miscarriages are very common.
However, the likelihood of having recurrent miscarriages at least 2 or 3 is low, only occurring in about 1 percent of women. Studies have shown an increased risk for miscarriage in women who have had recurrent miscarriages in the past.
Conversely, some studies indicate that having a successful pregnancy before a current pregnancy may decrease the risk for miscarriage in the current pregnancy. Several factors have to be accounted for in these cases, however. This includes maternal age and other medical conditions present. Most doctors will begin to investigate for a cause after you have had two to three losses.
This will include reviewing your medical history in detail and performing certain tests. When the sperm and egg meet, the cells come together. They then begin to divide to start forming the genetic material that makes up a person.
Each of us is supposed to have 46 total chromosomes. If something goes wrong when the cells are dividing, a chromosome may be missing or repeated. About 50 percent of all first trimester miscarriages are because of chromosomal abnormalities. This can occur more frequently in women who are considered advanced maternal age, or greater than 35 years old at pregnancy term.
Uterus or cervix infections can be dangerous to a developing baby and lead to miscarriage. Other infections that may pass to the baby or placenta can also affect a developing pregnancy and may lead to loss. This refers to defects of the uterus cavity. Clotting disorders are conditions that cause your body to form more blood clots than normal. Examples include lupus anticoagulant and antiphospholipid syndrome. In the case of pregnancy, blood clots can form in the placenta.
This prevents nutrition and oxygen from getting to the baby-to-be, and prevents waste from being carried away. The first trimester of pregnancy is considered weeks 0 to After the delivery, the doctor will have the baby and the placenta examined to help find the cause of death if it's still unknown.
Women who have had several miscarriages may want to get checked to see if any anatomic, genetic , or hormonal problems are making miscarriages more likely. Still, some things — such as smoking and drinking — put a woman at a higher risk for losing a pregnancy.
Good prenatal care can help moms and their babies stay healthy throughout the pregnancy. If you've had a miscarriage, take time to grieve. The loss of a baby during pregnancy is like the loss of any loved one. Give yourself time to heal emotionally and physically. Some health care providers recommend that women wait one menstrual cycle or more before trying to get pregnant again.
Reviewed by: Larissa Hirsch, MD. Larger text size Large text size Regular text size. What Is a Miscarriage? What Happens During a Miscarriage? What Is Stillbirth? Why Do Miscarriages Happen? Can Miscarriages Be Prevented? Take prenatal vitamins daily. Exercise regularly after you've gotten your doctor's OK. Miscarriage in the second trimester between 13 and 19 weeks happens in 1 to 5 in 1 to 5 percent pregnancies. As many as half of all pregnancies may end in miscarriage.
Most women who miscarry go on to have a healthy pregnancy later. If you have repeat miscarriages also called recurrent pregnancy loss , you have two or more miscarriages in a row. About 1 in women 1 percent have repeat miscarriages. Most women who have repeat miscarriages 50 to 75 in or 75 percent have an unknown cause. And most women with repeat miscarriages with an unknown cause 65 in women or 65 percent go on to have a successful pregnancy.
But some miscarriages and repeat miscarriages can be caused by:. Problems with chromosomes About half of all miscarriages are caused when an embryo fertilized egg gets the wrong number of chromosomes. This usually happens by chance and not from a problem passed from parent to child through genes.
Chromosomes are the structures in cells that holds genes. Each person has 23 pairs of chromosomes, or 46 in all. For each pair, you get one chromosome from your mother and one from your father. Examples of chromosome problems that can cause miscarriage include:. Problems with the uterus or cervix. The cervix is the opening to the uterus that sits at the top of the vagina.
Problems with the uterus and cervix that can cause miscarriage include:. Infections Infections, like sexually transmitted infections also called STIs and listeriosis , can cause miscarriage. An STI, like genital herpes and syphilis , is an infection you can get from having sex with someone who is infected. If you think you may have an STI, tell your health care provider right away. Early testing and treatment can help protect you and your baby.
Listeriosis is a kind of food poisoning. If you think you have listeriosis, call your provider right away. Your provider may treat you with antibiotics to help keep you and your baby safe. Some things may make you more likely than other woman to have a miscarriage. These are called risk factors. Risk factors for miscarriage include:.
Some health conditions may increase your risk for miscarriage. Treatment of these conditions before and during pregnancy can sometimes help prevent miscarriage and repeat miscarriages. Your body does a good job of protecting your baby in the early weeks of pregnancy. You may have heard that getting too much caffeine during pregnancy can increase your risk for miscarriage.
Caffeine is a drug found in foods, drinks, chocolate and some medicine. If you have any of these signs or symptoms, call your provider. These tests can include blood tests, a pelvic exam and an ultrasound. An ultrasound is a test that uses sound waves and a computer screen to show a picture of your baby inside the womb. If you have repeat miscarriages in the first trimester, or if you have a miscarriage in the second trimester, your provider usually recommends tests to help find out the cause.
Tests can include:. Depending on how long you were pregnant, you may have pregnancy hormones in your blood for 1 to 2 months after you miscarry. Most women get their period again 4 to 6 weeks after a miscarriage. It may take longer to recover emotionally from a miscarriage. You may have strong feelings of grief about the death of your baby. Grief is all the feelings you have when someone close to you dies.
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