Opk's

So yesterday I took about 3 ovulation tests each one had very faint line (couldn't hardly see the line), this morning at 10am I took an opk and it was really dark but not positive. Anyway i just took another one and it was faint like yesterday. I would of expected it to be dark again or even positive . It's so frustrating. Do you think maybe my body worked upto to ovulate and maybe this month it's not going to happen? So the line got faint again