M/C and D&C

I lost my pregnancy back in November 2018 and had to have a D&C well 10weeks post op and I still get bfp..!!!????

Doctors don’t care and still enough hcg to get 1-2weeks on clear blue digital....

does anyone have any idea what this could be or mean??

Hcg is the same for the last 4/5 weeks

P.s. I’m not pregnant again