Is It Bad That I Feel Nothing For This Baby

I'm a surrogate for a gay couple and well... I always thought surrogates are supposed to have this bond with the baby. Feel some love. But all I feel is "I just want you out of me so I can hang you over to your parents". Is that bad ...I feel terrible thinking that. To me it feels like I'm just giving them a puppy. I have no connection to this kid at all. I don't even want to hold it after I give birth. I just want a martini and my body back... Am I horrible?