My LO is 3 days old. She came out with an excellent latch. As of now, I've been trying to nurse her and she cries like someone is hurting her and fights my breast. She opens her mouth and searches for the boob but she fights it instead of latching and nursing. I'm feeling so bad! What does this mean? It's so discouraging and my SO doesn't understand and he's getting frustrated thinking something is wrong.