Pet Sitter Job in Dinuba, California

Okay so this is an odd request but I need a chain linked fence. Here's the background story but please no judging. Okay so we were planning on getting our dogs fixed. We have 2 females and my roommate has 1 male. Well before that was to happen her male Boxer got to my female German Shepherd and now I suspect she is pregnant. I didn't even know she was in heat, I came home from college one day to find them stuck together. She's still been extremely nice to us however, I worry she will be an "aggressive" mommy to the other dogs as she is already not wanting to tolerate the other two. I am a kidney donor and I received a phone call February 13, 2015 saying they are wanting to do the surgery in mid April. The problem is, if I calculated right from the first time I seen them stuck together she should be due around April 10th. Now, my niece says she can keep an eye on her but because she also has dogs, I will need a chain linked fence to put them in to protect the puppies and to protect my dog from wanting to hurt other dogs as I know she wont be aggressive to other people. I just can't spend a whole lot on a chain linked fence because any extra money I get I have to save to go towards extra expenses when the surgery takes place, such as food and lodging, things like that. If anyone has one or knows anyone who has one who either wants to just get rid of it for free or for a decent and reasonable price, please let me know, I would greatly appreciate it!