Opk Newbie

Ok, I am very new to using ovulation prediction kits. Like, this is my first one, new.
So I understand the gist of it. I know that if the test line isn't the same color or darker than the control, then it's neg. But here's my confusion. As you can see in the picture below, there is a faint line in the test area. So does that line just always show up, no matter where you're at in your cycle? Is it just a straight up, not even close to ovulation negative? Or since it's there, does that mean ovulation might be coming in a couple days/week or so? 
My cycles are way irregular right now, so I don't have anything to tell me when I may or may not be ovulating. I woke up this morning with egg-white cm for the 2nd day in a row. It's getting heavier and stretchier, but it still has a creamy color to it. That's why I thought I might take an opk to maybe finally tell me where I'm at in my cycle. Please help!!