Ovulation test?

How do I know if I'm ovulating? I took a ovulation test, and the lines are blue dye so it's hard to tell. Is it 2 lines if it's positive, 1 line if it's negative? I'm so confused but I want to make sure I time it right. Mine has 2 blue lines, but the lines have to be identical for it to be positive & I seriously can't tell 🙁