Flashing smiley! OPK

Samantha β€’ WifeπŸ’- Mom πŸ’™ πŸŒˆπŸ‘ΆπŸ»πŸ’™

What does it mean when your smiley face is flashing. Does it mean you are 2-3 days away from ovulation or 4-5. Also how close to the date are these digital ovulation tests? Are they accurate to the day or do you ovulate a couple days after. Help πŸ˜πŸ˜…