So, this is hard to tell right now exactly what is happening. Did you start trying again? Some women ARE more fertile right after a miscarriage. However, the low HCG number and positive test could be the left over hormones from your miscarriage. But then again . . . you could be in very early pregnancy. See, I'm no real help here. LOL But your next HCG reading will be VERY telling. What day do you have your next one??