Anyone ovulate with HCG less than 25?

Justine • TTC#1 since October 2017 👼5.25.18 👼1.16.19

I'm almost 8 weeks post d&c. I'm showing negative on a hpt that says it has a 25 mIU/mL sensitivity. I have a very faint line on first response which I read online can capture results at 6.5 mIU/mL. I started having ovulation symptoms a few days ago. Just curious if anyone has confirmed ovulation with a small amount of HCG still in their system?