Anyone ???? Help

Ashley
Does anyone know the chances of having a miscarage after you hear the heart beat I had a doctors today they told me I was 9 weeks 4 days farther then what I thought and the doctor and I heard the heart beat I am just wondering as I have had 2 misscarages but neither of them lasted last 8 weeks. I'm 9 weeks 4 days today I go back when I'm 13 weeks 4 days