I Took A 10miu Pregnancy Test (the Type Where Two

I took a 10miu pregnancy test (the type where two straight lines mean pregnant and one line is not pregnant) well two dark lines came up exept the positive pregnancy line is on abit of a slant, it isn't exactly straight. I took another test within 10 minutes and I can't see anything but the control line. (Maybe a faint line if I strain my eyes but could be my imagination) what does a slightly crooked positive line mean? Could it be faulty?? I am 11dpo.