I just got my first positive opk! I feel like I've been waiting ages...horrible timing though as my husband and I are unable to bd tonight! I got my positive about 7 pm. It was lighter a couple of hours before. I know they say between 12-24 hours is how long you have after "O", do I still have a decent chance if we bd in the morning? How long on average for you ladies? I'm just super nervous about missing my window! Thanks in advance.