Fiancé family is denying our child!

Falon
I am going to have our baby girl in 5 weeks and my fiancés family is denying our child! 
They are saying he is not allowed to sign her certificate with no DNA test! 
I have been depressed and dealing with this my whole pregnancy! 
They are always telling him to leave me, I'm truly scared for my daughter to grow up around these people!!! 
I know my daughter is his but I'm broken that I legit have to have a DNA to stop them from talking!!! 
But am I wrong for not wantin them ANY WHERE near me or my daughter!