So many questions

I had a miscarriage last saturday.I was 5 weeks 3 days. When they took blood at the ER I had a HCG of 9.7. I have to get blood taken again on friday. They didnt really tell me much.
So now Im wondering if my levels ever really went up they way they should have and how long it will take to go back to 0 considering they are so low already. Has anyone had a experience like that?