I never get a positive on them test try the clear blue OV test that show you a smiling face if you're ovulating and a blank face if you're not ovulating because with those tests for some reason I was never showing up to darker lines they say the control line has to match the test line or be even darker for some reason I couldn't predict when I was ovulating so I was told to take the clear blue test and they work so much better and their more accurate more easier to read and understand! I always felt like I wasn't ovulating due to taking notes for the test strips and I was actually wrong I was ovulating for some reason those test strips just wasn't picking up on it but the clear blue ones did!