Is there something wrong with my body?

Harlie

Why does my body take so long to register HCG? I’m 99% sure I’m pregnant again, simply because I know my body. The first time I was pregnant I ended up miscarrying because of a blighted ovum. This time my body is reacting the exact same (really late AF, extreme fatigue, swollen nipples, delayed positive HCG tests). Last time I didn’t get. BFP until 13 days past my expected AF. I’m currently 12 days late this time around, and still have no sign of a BFP. Does this mean I will miscarry again? What are some reasons my body takes forever to register HCG?