Ovulation confusion? Please help.

Emilly
I've just come back off holiday, and forgot to take ovulation tests with me!! 
Anyway as abit curious when I got home so took one on cycle day 20 and got a flashing smiley face. Now on cd 24 I've had 4 flashing smiley faces. What does this mean? 
Surely I would have ovulated by now my normal cycles are 28-30 days long   
Thanks for the help baby dust all around!! ✨✨✨✨