I'm trying to conceive. i had a positive opk on sun, a negative on mon, and a positive on tues. when exactly is my lh surge & when am i ovulating?

OPK: The accuracy of OPK varies - sadly, OPK are more reliable the more regular your cycles are , meaning the women who need them most get the least use out of them. Two "lh surges" is not physiologic, so it's either a bad test or you have a very unusual ovulation. I recommend instead once you get a positive there is no good reason to continue testing further, hope this helps.