subchorionic hematoma

Des • US traveler. OR living. RH Neg life yo.
Did anyone miscarry from this? Was it because of a large clot? I miscarried in May at 14 weeks because of a large clot and they weren't sure if it was because of the subchorionic hematoma, or if I had Hughes syndrome. I've found myself pregnant again, and I'm afraid I'll miscarry late again.