I've been OPK testing with both the clear blue digital and wondfos. I got my peak (solid smiley) with the clear blue on 10/9, glow says I ovulated on the 10th. Looking at the wondfo strips, it didn't look positive until 10/11-10/12 and back to negative on the 13th. When do you think I actually ovulated? According to Glow I'm 12dpo but is it possible I'm actually less than that? Any feedback would be appreciated!