Positive opk?

Rachel

I got what I think is a positive opk on a regular opk and I wanted to try another test to confirm. I used the last cb advanced stick that I had but I haven’t used it since last getting a solid smiley. I read that the first test is always back to o which is frustrating because it is the last one I have and I want to know if it actually tested positive. Do the lines on the test mean anything? Mine are both really dark