miscarriage or baby still there ?

Went to the er today for some bleeding and cramps . I've had a miscarriage before and it was consistent heavy bleeding . Doctors said my cervix is closed . I'm supposed to be 6 weeks today . They said my hcg levels dropped significantly but to get another blood test done in two days to see if the levels rose . Has anyone ever had this and their baby was healthy and okay ? I'm terrified