Me and my babies daddy are not married. We are engaged. But my mother keeps trying to urge me that I should give the baby my last name. My parents don't like my baby daddy and refer to him as sperm donor. But I don't know what I should do. I don't want my family upset if I give him (my baby, found out it was a boy yesterday) Brian's last name. But I don't want to upset Brian and his family if I give him my last name. I figured I would see how Brian and me got a long through my pregnancy and then decide. But my mother keeps telling me I need to decide now. Whats your opinions?