No solid smiley with Clearblue Advanced OPK?

Kris

Anyone NOT get a solid smiley with Clearblue? I've used it plenty in the past and always gotten the solid smiley around the day that Glow predicts. This week I've got nothing but blinking smileys. I've tried testing mornings and evenings to make sure I'm not missing anything. Does that mean I'm not ovulating this month?