The Walking Dead: Who Is The Baby's Father?

During the mid-season premiere of The Walking Dead, baby Judith made a couple brief but interesting appearances. Of course, Lori slept with both Rick and his best friend Shane, so there has been some question as to who the father of the baby is. Were there some possible hints in the midseason premiere about who the father is? When Rick returns from Woodbury, he goes to see baby Judith. When Beth hands the baby to Rick, she says, "She kind of has Lori's eyes, the baby." Then, Rick stares at the baby, perhaps trying to determine if he can see Lori's eyes. Of course, Rick could also be looking to try to figure out if the baby has any features similar to him or Shane. The fact that the baby starts crying the minute Rick takes her and will not stop crying could be a hint. Is it foreshadowing that baby Judith isn't Rick's baby? Near the end of the episode, Rick has a vision of his dead wife Lori. When people have visions of dead people in TV shows or movies, the dead person is often appearing to try to tell them something. Could Lori sense that Rick has doubts over if baby Judith is really his? Could the resolution of Rick's visions of Lori be that she gives him some kind of proof that baby Judith really is his daughter? Who do you think is the father of baby Judith?