Need some help or advice please

I had a miscarriage/ D&C on Nov 11th I was almost 8 weeks.. had sex Nov 26th I keep taking test and see faint lines... I suppose to start my period Dec 11th by glow but haven't had one yet since miscarriage... I'm bleeding now just alil on the lite size tampon so not much at all... but this is the 6th test I've took... are my hormones still there from miscarriage.. or is this a new pregnancy??? Y would I be bleeding though... just wondering if my hormones would still be there causing the test to be positive... anyone had this happen... am I crazy?