DO NOT USE BAYTRIL (CIPRO/ORBAX, ETC.), as these drugs will affect the skeletal growth of the unborn pups!
I would use Clavamox, but you might not be able to get these.
Truly, a vet visit is what I would be doing ... NOW. With a bitch's life on the line, plus all her unborn pups, I would not be playing guessing games myself.
If she is chopped up bad, and you can't take her in, then cephalexin / clavamox / TMZ would be my "guessing" choices.
Good luck!
Jack