Clear blue digital opk

Je

Hi ladies. I’ve been trying out the clearblue digital opk tests that will either give you a smiley when lh surge or a blank circle when no lh surge is detected. Tried it since CD8 and haven’t received my smiley and currently on CD15. Today (even though you’re not supposed to go off of this) the stick test line was super faint in comparison to previous days.

I’m worried I’ve missed my ovulation.

Has this happened to anyone?

Any advice helps.

Thanks.