Community post

It is definitely possible and you could have just missed your surge (like if you tested in the morning, but your surge was in the afternoon/evening). Mine did the same thing this month. I learned afterwords that it is best to use OPK's between 2-4 in the afternoon with at least a 3 hour hold. I was doing my OPK's at between 10-11 in the morning. CD12 is a little early, but definitely still possible. GL to you!