I noticed she was not very active and mostly staying under the heating plate this evening. I picked her up to check and I discovered what's in the picture. I have no clue what to do and I'm worried! I'm guessing it hurts when she moves because she's staying in just one place. I separated her from the others and she's also not complaining about that, which I also find worrisome. She's 2 weeks old. I think the white you see in the picture might be pus. What should I do? I'm very worried!