Do blood tests confirm if you've ovulated?

My Dr seemed to think I didn't ovulate last month due to my bloodwork, however I did get a positive OPK. My hormone levels looked normal but I do have very long cycles... That one was about 50 days
Fast forward to this cycle, just got a positive OPK, baby danced a bunch.... But I'm nervous maybe I'm not ovulating ?
I don't like or trust my dr so I'm not sure what to think