I have have a 25 day cycle and have been taking OPKs for the last week CD 6 to CD 13, twice a day (once around noon and once around 7pm) and haven't gotten a positive yet.  Last night, I felt ovulation pain and I've always just assumed that was the exact time of ovulation.  Could I be wrong and could ovulation actually come after the pain?  Anyone has a positive OPK after they felt it?