Charlotte do u BBT? How long are ur cycles usually? U need to gimme some more info so that I help u see when's the best time to bd. If u do bbt u will know when ur o day is. Not everybody's LP is 14 days. Mine is very short!
Missycandy, LP is luteal phase. Count from the day aft ovulation till u get ur AF. Lets say Ovulation day is say CD14, then CD15 is DPO1, ie day past ovulation. Say this cycle ur AF comes on CD 28, ur LP length will be 14 days. [IMG=http://www.singaporemotherhood.com/forumboard/clipart/happy.gif]
Starzz, no OPK tells u that u are going o ovulate anytime btw 25-48hrs. 48 hrs is like the max. U usually ovulate within 30(+/-2) hrs from the onset of ur surge. So u need to be testing minimally 24hrs.