ive gotton a + after my ovulation day before and none before kwim? opk's just detect increase in LH hormone which occur prior to ovulation. what kind of opk's do you use? i use the

kind, they cost a lil more but are deffenatly worth it considering its so yes/no....no guessing/squinting, i do enough of that with hpt's lol....
or another thing could be PCOS? they say that women continue to get + on opk's that have pcos, so its not a good indicator of ovulation for women with pcos, not saying thats what it is, just saying what ive read.....but i think that pcos + opk's continues throughout your entire cycle kwim?