Quoting Katie & Clay's Mommy!:" You could just be having ovulation. It doesn't necessarily have to be clear. Did you try to take an opk to see if it'll turn out positive. That way you can tell for sure it's what it is. "
Quoting Sarah24Michelle:" Nope if I ovulated yesterday would it still read positive today?"It would all depend on your surge. some women can have a long surge, some short others normal. But who knows. It won't hurt to take one. Get the cheap ones if you can find them.