subchorionic hemorrhage

BG
This morning I woke up to some bleeding and I had been having sharp pain in my left side (I have poly cystic kidney disease so I figured the pain was due to a cyst) so I went to the ER. The first person did an ultrasound and we could barely see anything and it was clear he didn't know what he was doing. They had another person do a scan and right away we saw Baby and a heartbeat (I'm 8 weeks 3 days) the heart rate was 168. They said that they saw a spot on the ultrasound that indicated a Subchorionic hemorrhage. Has anyone else gone through this?