Originally Posted by
atomic sagebrush
yeah, the surge and ovulation are actually totally independent of each other. The surge is a message that your body usually heeds but doesn't always and on it's own timeline. OPK are like your boss puts a post it note on your desk that says "sometime within the next few days could you call so and so for me" and then you have gotten the message. The call will occur within the next few days most likely.
Now, your boss may keep putting post its on your desk even after you've called, or he may not put another one on your desk at all and just trust that the one was enough. Or you can even forget to call even after the post it (even after many post its) and or you can call on your own without ever getting a post it.
The surge, represented to our eyes by the OPK is like a message your body is sending to itself that it will usually heed but you cannot tell specifically by the time the post it shows up if O has occurred or if it is about to.
I would LOVE that technology but all we have are the OPK.