What causes a subchorionic hemorrhage in early pregnancy?

A subchorionic hemorrhage (SCH) is bleeding that occurs between the gestational sac (the fluid-filled sac that encloses the developing embryo) and the uterine wall. The exact cause of an SCH is often unknown, but it's often associated with hormonal changes and the process of implantation. In most cases, SCH resolves spontaneously without any intervention. However, in some instances, it can be a sign of more serious complications. If you experience vaginal bleeding or abdominal pain, medical attention is needed.

Your healthcare provider should be consulted immediately if you experience any signs of bleeding during pregnancy. An ultrasound can help identify the extent of the bleeding and evaluate potential risks.