bull terrier unwanted pregnancy

Question
Hello Karen,   I have found myself in a dilemma.  I am a responsible dog owner, I bred my registered mini Aussie responsibly and then had her and the sire altered.   One of our pups became my parent's dog and unfortunately, they have had to move into assisted care.  I have the altered male two year old pup.  He has been here many times but came to live with us about 4 months ago.   He is submissive to the other two.
My daughter was left with a pit bull for a while, then the owner took her back.   He was arrested and asked my daughter to take her, which she did.   She has moved back home for a fresh start and brought the dog with her without notice.   She is a sweet dog but obviously engaged in pack dominance behavior when I (the Alfa) was not present.   She bit our adopted Aussie and he required significant vet care.  I have told my daughter to find the dog a home and gave her a two week deadline.   The dog has been calm and gentle though I do not leave her unattended with other dogs.   Of course she is not altered and now I think she is pregnant.   She would be due in the next two weeks if she is, it could be a false pregnancy as she has not whelped before.   If she is pregnant, I know she can not have pups around my dogs, territory issues would be a real challenge.  
My question is, what can I do with this dog to get her into a stable home and if pregnant where to take her.  What is the most humane option. My daughter does not have money to have her x-rayed and if absolutely necessary I will take her in.  I have already spent a lot of money because of this dog.  She is not a bad dog and if she had stability, I think she would be a great dog.  The pups would be mutts of unknown breed.
We have a real dilemma here.   Any suggestions would be helpful.
Thanks
Betsy

Answer
If this bitch was around intact males when she was in season and she was never confined, she is undoubtedly pregnant. Never assume that because she has never had puppies before that she is having a false pregnancy, although that is always a possibility.

Personally, I would take her to the vet ASAP and have her spayed. This can still be done even if she is pregnant. If you don't want to do this or you cannot afford it, then the next best thing (actually two next best things)are to either surrender her to a rescue that can take care of her and find a good home for her and her puppies, or to let her have her puppies (if she is indeed pregnant) and then place the puppies out when they are 7-8 weeks old. She should still be spayed after the puppies are a couple months old.

There are two pitbull rescues in Oregon:
http://www.bapbr.org/
http://pitbull.rescueme.org/Oregon This one also lists some low-cost spay/neuter clinics near the bottom of their page.

If she is pregnant and you decide to whelp the puppies, I would keep her confined in a separate room that the other dogs cannot get into. Here that would be the kitchen, as that is where I keep any in-season bitches and whelp puppies.

Pregnant or not, she needs to be kept in a crate (or closed-off room) when you cannot be home to supervise the dogs.