Can somebody help me with my dog?

She's a Chihuahua/Toy Terrier & she got loose & got pregnant by a Jack Russell on August 8th. She's about 8 yrs old & she's at the point that she hasn't eaten anything in about 1 1/2 weeks. She's just now got to where she'll drink water & hold it down. It's seems like she's starving herself to get rid of her puppies, but in the process she's nothing but bones now. We can't afford to take her to the vet so I wanted to know if there was anything at all that I can do to keep her up. I've tried feeding her broth of both kinds, solid dog food, wet dog food & scraps & she won't have anything to do with any of it. Can somebody out there help me? She hasn't got long at all, so please can somebody help?!?!