My new 8 week old American Bulldog Puppy is showing signs of being on heat, our male is constantly trying to hump her and she is giving off the smell associated with being on heat. She also has a slight discharge and things are very swollen. I washed her the other day and our boy left her alone for about 10 hrs before the smell became strong again. I'd appreciate anyone's input. Is this possible or has anyone else seen something like this before?