A subchorionic hematoma or hemorrhage is bleeding under one of the membranes (chorion) that surrounds the embryo inside the uterus. It is a common cause of bleeding in early pregnancy.

Where is a Subchorionic hematoma located?

Subchorionic hematomas are the cause of about 20% of all bleeding during the first trimester. This is a type of bleeding that occurs between your amniotic membrane, which is the membrane that surrounds your baby, and your uterine wall.

What does a Subchorionic hematoma feel like?

Vaginal bleeding caused by a subchorionic hematoma can range from light spotting to heavy bleeding with clots (although it is also possible to have no bleeding at all) (6,7). Some women experience cramping alongside bleeding, especially if bleeding is on the heavier side (6).