Two DNA cotton swab paternity test both shows negative?

A real father is not necessarily the biological father. I say since you been there since day one who cares what the dna says. If you are taking care of her and paying for her things and you love her then you are the real father of that baby. As long as the mother want you around of course. You dont have to let go. It might be real hard finding out shes not yours. Thats why your saying you dropped the things if its contaminated but the truth is its killin you to know that shes not yours. But tell you what in her tiny little heart you are her father. And nothing can change that unless you decide to stop being there for her. I wish you luck with you and your daughter.