Miscarriage?

I went to the ER last night for bleeding at 9 weeks pregnant. After all the test and stuff they basically said there is no heart beat and even though I'm supposed to be 9 weeks the baby was measured at 7 weeks and the sac 6 weeks and my hcg levels are way low? They said I should start experiencing heavy bleeding and cramps soon and I'll probably pass the baby. Since I left the hospital I haven't bled at all and my cramps are pretty much gone. Is this normal? Am I just supposed to wait it out? This is my first miscarriage.