Miscarried at 15 weeks is this my rainbow?

Cheryl

BACKSTORY: I had my D&E; on June 21st bleed for about a week and a half took a pregnancy test about July 10th cut to July 7/24 and took another test only because I was wondering why I haven't gotten my period and why my cervix was still high and got a faint positive. SO my question is do you think this is new or left over HCG?

(I did call doctor and he mailed me a script for blood work I will get it done Monday and let everyone know)