Femera and OPK-huh?!

I had my first round of Femera after trying Clomid with no luck. I had two follicles on cd13 one was 21mm and one was 20mm.

The doctor said I should ovulate within 24 hours. That day I took an opk and I had solid smiley. I also had ovulation cramping. The next day it was an empty smiley. Now today, the third day, it is back to being a solid smiley. I test twice a day everyday.

Did I ovulate, or is my body trying to ovulate with no success? Any info will help, thanks!!