Hi ladies, I just started TTC after MC. Bought some cheapie opk tests in Amazon. I received very clear positive on Saturday and on Sunday it was much lighter. As per instructions it is negative. However the second line is still pretty dark (I tested one today and it was much lighter). How do I read it? Does it mean that I'm simply post peak and hormones are getting lower? And line getting darker pre-peak would mean hormones are getting higher?