The educational health content on What To Expect is reviewed by our medical review board and team of experts to be up-to-date and in line with the latest evidence-based medical information and accepted health guidelines, including the medically reviewed What to Expect books by Heidi Murkoff.
This educational content is not medical or diagnostic advice. Use of this site is subject to our terms of use and privacy policy. Registry Builder New. Subchorionic Bleeding During Pregnancy. Medically Reviewed by Sarah Obican, M. Medical Review Policy All What to Expect content that addresses health or safety is medically reviewed by a team of vetted health professionals. Sometimes, blood clots form within the layers of the placenta. But more often than not, they heal themselves.
Back to Top. In This Article. A subchorionic hematoma pregnancy is usually nothing to worry about. However, some women with a subchorionic hemorrhage in the first trimester are at an increased risk for placental abruption later in the pregnancy , which is what happens when the placenta partly or completely detaches from the uterine wall. And if placental abruption occurs, it can cause heavy bleeding. Large subchorionic hematomas are also associated with miscarriage and stillbirth, but the research is conflicting.
Small studies have also linked subchorionic hematoma with preterm birth, preeclampsia, chorioamnionitis infection , and intrauterine growth restriction low birth weight. And some studies show that subchorionic hematomas have become more prevalent in twin pregnancies. There isn't anything you can do to prevent a subchorionic bleed. However, you do want to make sure you're doing everything you can to encourage a healthy pregnancy , like eating a well-balanced diet and taking a prenatal vitamin.
If you experience vaginal bleeding, see your doctor to get a proper diagnosis and rule out other issues. Most women with a subchorionic hematoma go on to have healthy pregnancies and deliveries. BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals.
We believe you should always know the source of the information you're seeing. Learn more about our editorial and medical review policies. Subchorionic Hemorrhage. University of Michigan Health. Subchorionic hematoma occurs more frequently in in vitro fertilization pregnancy. American Family Physician. First Trimester Bleeding.
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It looks like your browser does not have JavaScript enabled. Please turn on JavaScript and try again. Important Phone Numbers. When should you call for help? Where can you learn more? Top of the page. Your Care Instructions A subchorionic hematoma or hemorrhage is bleeding under one of the membranes chorion that surrounds the embryo inside the uterus. How can you care for yourself at home? Keep track of any bleeding, and follow the guidelines for when to call your doctor.
Keep in mind that some bleeding during the first trimester or an abnormal finding on an ultrasound may: Not cause any problems for you or the baby.
What to know about subchorionic bleeding. Medically reviewed by Holly Ernst, P. What is subchorionic bleeding? Share on Pinterest Subchorionic bleeding is a common cause of bleeding early in pregnancy. Share on Pinterest A doctor should assess pregnant women who experience vaginal bleeding.
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