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I've done OPK's before while TTC but I'm currently *kind of* trying to avoid for 2 more months or so. anyways, my question is, Do you count 12-48 hours from the first positive OPK or the MOST positive OPK to ovulation? Because I got a clear positive OPK this am and this afternoon. but when I think back to when I was TTC LO, I would always get a positive and then a REALLY positive that night or the next day. I'm wondering because I O'd about 4 days early according to my OPK's. Which means we DTD in my fertile time (late on the 9th, almost 10th whoops!!). My APP even adjusted everything after I put in my positive OPK this morning and it looks like we were well in to my fertile period. I'm also cramping and pretty sure from my CM and Cramps I'll O very soon, if not today. but I just want to know what the rule is on positives and when to start counting down to O. TIA!!! Good Luck All!!!