They can spay her if she is pregnant - early along. My poor Scout was rescued from abuse and was pregnant but it was ended by being spayed at the shelter. It's very sad to think about but I think more unwanted babies being born is even sadder, especially when you know what can happen to them. This all happened to her before I adopted her so I didn't have to make the tough decisions.

What makes you think she might be pregnant? Is she showing signs or are you just worried since she isn't fixed. Did the previous owners say she was in heat recently?

My advice is take he to the vet to find out and get her spayed as soon as possible if she isn't.

Good luck.