Hi and welcome to YT!   
I'm sorry this happened.  I think you'd be safer to get both your dogs fixed so you can avoid this problem in the future.  Since your male is double your females size there is a chance the puppies will be way to big for her to safely have naturally.  If you let the puppies go to term your female will probably have to have a c-section.     
You can either have her spayed now and abort the puppies.  Or you can let her go to term, go thru with the c-section, and have her spayed at the same time.  Hopefully if you post in the breeders section you will get more advice if you decide to go with the c-section and spay.     
				__________________  Kellie    and    Morgan      |