HCG that WONT go down

Brittany • Married💍 1 amazing little girl 7-9-19🤱🏽

10 days ago I experienced a miscarriage, it was absolutely devastating and unfortunate, thinking it could get any worse... my HCG is not seeming to be going back to normal, I have a blood draw tomorrow to monitor my level and for shits and giggles I took a pregnancy test to see if my line was getting lighter, however my test line is just as dark as the control line... to me this is where it gets confusing, 8 days ago when I got my ultrasound my OB told me I had 3 eggs on my left ovary getting ready to release.... but WOULDNT release if my HCG was elevated... kind of contradicting herself? Thoughts or opinions are welcome please.