![]() ![]() For each pair, you get one chromosome from your mother and one from your father. Each person has 23 pairs of chromosomes, or 46 in all. Chromosomes are the structures in cells that holds genes. This usually happens by chance and is not caused by a problem that’s passed from parent to child through genes. Up to 7 in 10 (70 percent) of all miscarriages are caused when an embryo (fertilized egg) gets the wrong number of chromosomes. But some miscarriages and repeat miscarriages can be caused by: We don’t know what causes every miscarriage. What causes miscarriage and repeat miscarriages? And after three or more miscarriages in a row, the risk of having another miscarriage is about 43 in 100 (43 percent). After two miscarriages in a row, the risk of another miscarriage increases to about 28 in 100 (28 percent). The risk of having a second miscarriage is 20 in 100 (20 percent). About 1 in 100 pregnant people (1 percent) have repeat miscarriages. Repeat miscarriages, or recurrent pregnancy loss, is the loss of two pregnancies in a row. You may need a procedure to empty the uterus or the cervix may dilate on its own and the tissue will be passed like a period. It is sometimes called an empty sac pregnancy. This is when you have a miscarriage but don’t have bleeding or cramping and you don’t pass any tissue out of your body. You may pass tissue suddenly or after having medical treatment. This is when your body pushes out all of the tissue from the pregnancy. You may have bleeding, cramping and other signs and symptoms of miscarriage. This is when a miscarriage has happened, but the body doesn’t push out all of the tissue from pregnancy. Most of the time, threatened miscarriages turn out fine. The cervix is the opening to the uterus that sits at the top of the vagina. This is when a pregnant person has bleeding, little or no pain, a closed (undilated) cervix and the baby may have a heartbeat. Most people who miscarry go on to have a healthy pregnancy later. Some research suggests that more than 30 percent of pregnancies end in miscarriage, and many end before a person even knows they’re pregnant. Pregnancy loss that happens after 20 weeks is called stillbirth. Miscarriage in the second trimester (between 13 and 19 weeks) happens in 1 to 5 in 100 (1 to 5 percent) pregnancies. Most miscarriages - 8 out of 10 (80 percent) - happen in the first trimester before the 12 th week of pregnancy. For women who know they’re pregnant, about 10 to 20 in 100 pregnancies (10 to 20 percent) end in miscarriage. Miscarriage (also called early pregnancy loss) is when there is pregnancy loss before 20 weeks. ![]()
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