Faint line?

Tamara

Did this test with nothing showing up. Noticed it about 2 hours later and there is a faint line. I know you're only suppose to look after 3 minutes but just wondering could it actually be positive? Had anyone done this and actually been pregnant. Followed it with 3 digital test, 1 pregnant 1-2, and the other 2 negative. (Maybe because my pee had diluted)??? So confused