Thanks so much for replying BW. For the past 2 hours I've had very big O cramps...so I think it's happening today. It's making me feel a bit unwell actually. So I think it's safe to say CD15 is O time. I'll DTD tonight or tomorrow and hopefully catch that eggie...if not, well...I'm gonna spare all this worrying stuff and buy OPK next month. Wish me luck but I strongly think I'm O now...