I use the Clearblue advanced with the smiley faces. Today is the 5th blinking smiley face for high fertility, but no temp dip yet, it's only been increasing! This has been driving my crazy because I usually only have 1-2 blinking smiley faces/high fertility and then the solid smiley face for peak fertility will appear. It says to keep testing for 9 days if the blinking smiley appears, so I'll keep trying for the next 4 days. Not sure if I ovulated earlier in the cycle also, but I usually ovulate between CD17-CD19. Has anyone else gone through something similar?