low hcg

I am 4 weeks 3 days and I'm hcg level is 19 . I've had some dark red bleeding today only when I wiped. I dont have any cramps or anything . went into the clinic and they took my hcg which is 19 I'm just wondering if this is a miscarriage or will I have a normal pregnancy . this is baby # 3 no pervious miscarriages .