Trying to understand different tests

Ab

Had a miscarriage about 3 weeks ago and my pregnancy tests are almost white- just a hint of a line still. I tested ovulation and it’s a blaring positive. Is it because I still have hcg or am I about to ovulate? I feel like I’m about to ovulate (cramp on one side, bloated, etc) but didn’t think I could if still testing positive-even barely so. Anyone have experience with this?