Some people say to test twice a day, because your surge could be very short and may only have a 12 hour window, which only adds
to the anxiety. I would have liked
to try
it, but
it was hard
to stomach the $30
for each kit.
You could still conceive naturally. OPK's are not effective on everyone. Most of the time, it is because you ovulate at times you least expect due to stress, anxiety, or life events as well as most women don't ovulate every month too.