Negative ovulation test but still ovulate?

Amber

Anyone continually get negative ovulation tests (I used pregmate this month) and still end up ovulating and pregnant? The control line on my test strips definitely got darker when I had tons of cervical mucus but never fully became positive, but I now am late for my period (2days) and still getting negative pregnancy tests.

Just wondering if there’s a chance I still ovulated and could still be pregnant. (If I did ovulate it was around day 20 of my cycle).