One of my 7 month old replacement girls has hurt herself. She has no visible injuries and when I felt of her she didnt react as if she was in pain. She is having a hard time raising her head and it is turned. She has so some what of a problem walking. She is up eating and pooping fine. I have no clue? Dont know if she hurt herself with the fence, playing,fighting or what. She is in a separate field with 3 other girls. Sisters same age pretty close to same size. They are fine as a fiddle. Any suggestions as what to do or what could have happened? It happened between checking on them and me eating supper. I went out to feed right after supper and she was like that. Any suggestions i would be very thankful.