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  I am so sorry ... the only thing I know is what I have learned here also.  Our Toto has been spayed since she was about 8 months but it would seem to me that there would be something your vet could advise based on her age and that german shepard's size.   I would take Sarah to the vet as soon as possible and follow his/her advise!   Please keep us updated!  
				__________________ "The difference between genius and stupidity is that genius has limits." -- Albert Einstein |