Hello, this is my first post but I've been using Glow for one month and TTC for five months. This is the 5th opk I've use in a row and I could tell that the others we're faint but getting darker. This one is the darkest so far but I'm not sure if it's a real positive. I have PCOS and my doctor told me to call when I get a positive, but I don't want to jump the gun. What do you think? The control line is the bottom one. Thanks!