My first thought with the rest of the symptoms you described is canine influenza with a secondary pneumonia infection. It sounds like your dog may have a more severe case and may need more intensive treatment. Is she eating or drinking? If she's not drinking, I recommend having the vet give her fluids (They may have done this already). Also, it sounds like they have already put her on antibiotics, but I would suggest checking that they definitely did prescribe a broad spectrum antibiotic.
Here is a website with a good description of those two illnesses. It describes the signs an symptoms, as well as recommended courses of treatment.
http://www.petmd.com/dog/conditions/respiratory/c_dg_canine_influenza#.UdMT_RTD_IV
Here is a website with a good description of those two illnesses. It describes the signs an symptoms, as well as recommended courses of treatment.
http://www.petmd.com/dog/conditions/respiratory/c_dg_canine_influenza#.UdMT_RTD_IV