So I've never done opks before this is the first month I always thought I ovulated on cd 22.  But since ttc I never took any opks. This month I decided I would. I'm currently on cd15. We BD this afternoon then I thought I will take a ovulation test as been doing, the line has come up much darker then yesterday's line. When do you think I'll get my positive? I believe all the other months I was BD on the wrong days.