Subchorionic Hematoma in Early Pregnancy: Understanding Risks & Monitoring

Question
First time pregnant.I am on my 1st trimester of pregnancy.On my last check up i was told to have subchorionic hematoma and i need an u/s.Do i still need it.I already had twice already.And i don't feel anything bad.

Answer
Dear Gay,

A subchorionic hematoma is simply a collection of blood either within the folds of the developing placenta or between the placenta and the uterine wall. A small to moderate sized hematoma will usually dissipate on its own and not have any negative effect on the pregnancy. At times it can cause some vaginal bleeding/spotting. Large hematomas that hemorrhage can carry a higher risk to the pregnancy. Thus, the smaller the hematoma the better.

During the next ultrasound, they will look at it again and re-measure to make sure that it is the same size or smaller. As long as there is appropriate fetal growth and a strong, steady heart rate, you should have no serious concerns regarding this hematoma. But they do want to keep an eye on it via ultrasound to make sure that it is not growing in size. Large hematomas, which strip at least 30-40% of placenta away from endometrium, may enlarge further, compressing the gestational sac and lead to further complications. So even though you may not actually feel anything physically, it will be important for them to monitor the hematoma now that it has been found.

I hope this has helped you and answered your question. I wish you well.

Brenda