I don't believe this! FF has picked up ov for Tuesday! I think I missed a positive OPK during monday night, as I had a faint line before and after, but no line at all any other days. I usually ov at least 24 hours after a positive. On weds evening I had cramps that felt like I was getting ready to ov and I had a pain in my ovary for a few seconds that woke me up on weds night. My chart looks more like i ovd on weds to me. What do you think?