Hi everyone, just a quick question on OPKs. The top one is CD14, middle CD15, and then today CD16. I took cd14 as my positive, and normally I would stop using OPKs at that point. However, I continued to test and noticed this morning's was the darkest yet. Would you say CD14 is positive? I'm worried we might miss the window of opportunity as we dtd cd13, 14 and 15. But said we wouldn't tonight as dp is so tired! Is it worth persuading him or do you think we have done enough?