Subchorionic Hemorrhage?!

I wrote a post where I was bleeding after sex about a week or so ago. I saw someone say this hemorrhage might be why. Well yesterday I was in a car accident and went to the hospital to check on myself and my little baby. Everything was okay from the wreck, but they found a small subchorionic hemorrhage and I had a contraction while in ultrasound. They told me to take it easy until Monday. No work, no lifting my toddler, pelvic rest. I'm 10 weeks 3 days. Has anyone else had this?!