I bought a day old calf last monday and she has had scours for a few days and it got better last night, went to feed her this morning and she looked weak and shakey, also had a little bit of white stuff coming out of her nose. tonight she still drank but could hardly stand, I had to help her get up. gave her a shot of pen and called the vet waiting for him to call back. any ideas of whats wrong with her?